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Casa Marina Key West Key West, Florida
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Hotel comparison guide

Casa Marina Key West vs Southernmost House Adult Exclusive

Casa Marina Key West is a large, family-friendly 4-star oceanfront resort with multiple pools, a full spa, and several dining venues; read this if you want a resort-style Key West stay that works for kids and events. Southernmost House Adult Exclusive is a smaller 4-star historic oceanfront mansion at the southern end of Duval Street aimed at adults; read this if you prefer an intimate, adults-only inn within steps of Key West’s southern landmarks.

Updated · about 1.2 km apart

Front façade and palm-lined entrance of Casa Marina Key West at dusk

Casa Marina Key West

Oceanfront resort · Family-friendly · Full-service spa & events

Best for families, larger groups, and travelers who want resort amenities (private beach, two pools, spa, several restaurants) in one property.

Southernmost House Adult Exclusive, Key West, Florida

Southernmost House Adult Exclusive

Historic mansion · Adults-only identity · Steps from Southernmost Point

Best for adults seeking a compact, historic, adults-only inn within immediate walking reach of the Southernmost Point marker and Duval Street.

Quick Verdict: Casa Marina Key West vs Southernmost House Adult Exclusive

When Casa Marina Key West wins: choose Casa Marina if you want resort-scale amenities — a large private beach, two oceanfront pools (including an adults-only pool), Spa al Maré, multiple restaurants/bars, and extensive event space. It’s better for families, wedding parties, and guests who plan to spend days on property.

When Southernmost House Adult Exclusive wins: pick Southernmost House for location and intimacy — it’s a small, 18-room oceanfront mansion steps from the Southernmost Point and Duval Street, with a single pool, a café/bar with ocean views, and an adults-only policy that keeps the atmosphere quieter and more intimate.

Bottom line: both hotels are oceanfront and 4-star, but they answer different needs — Casa Marina is a full-service, family-oriented resort; Southernmost House is a compact, adults-focused historic inn for travelers prioritizing location and a quieter stay.

Casa Marina Key West vs Southernmost House Adult Exclusive – At a Glance

Side-by-side facts for Casa Marina Key West and Southernmost House Adult Exclusive
CategoryCasa Marina Key WestSouthernmost House Adult Exclusive
Overall vibeLarge oceanfront resort with resort amenities, event spaces and family programmingSmall historic oceanfront mansion with an adults-only, intimate atmosphere
LocationOceanfront on Reynolds Street, roughly a 15-minute walk to the Southernmost marker and still under a mile from Duval StreetOceanfront at 1400 Duval Street, steps from Southernmost Point and Duval Street
Size (rooms)311 rooms and suites across four floors18 air-conditioned rooms
Ages / policyAll ages welcome; families supported (children’s facilities and family pool); primary guest must be 21 to registerAdults-only property — children 18 and under not permitted; check-in minimum age 21
Pools & beachTwo refurbished oceanfront pools (one adults-only, one family), plus roughly 1,100 feet of private beach and beach servicesOne outdoor pool and immediate oceanfront access; smaller property-scale beach access and terrace seating
Restaurants & barsMultiple outlets including Dorada (oceanfront Baja‑Med) and The Canary Room cocktail bar, plus breakfast options and grab-and-go marketSeaside Cafe at Mansion with ocean-view seating and a bar/lounge; complimentary continental breakfast
Spa & wellnessSpa al Maré (beachfront cabana and indoor services), large fitness center, sunrise beach yogaNot published
Known forHistoric 1920s landmark resort, largest private beach in Key West, extensive event/wedding spaceHistoric mansion setting at Key West’s southern tip and adult-only atmosphere
Front desk / service hours24-hour front desk with staffed arrivals assistance; resort services and pool conciergeFront desk with limited hours (open daily 8:00 AM–9:00 PM; arrivals after 8:00 PM need prior notice)
ParkingSelf and valet parking available (fees apply)Self parking available (surcharge)

Location: Casa Marina vs Southernmost House

Casa Marina Key West – Location

Casa Marina sits on Reynolds Street with a long private beach and is within walking range of Key West’s key attractions.

  • About a 15-minute walk to the Southernmost Point marker and roughly 20 minutes to Ernest Hemingway’s Home on foot.
  • Less than a mile from Duval Street’s shops and nightlife; resort is oceanfront with its own private beach (≈1,100 feet).
  • Share amenities and a shuttle with sister property The Reach for additional dining and pool options.

Casa Marina offers resort-scale oceanfront space a short walk from Key West sights while remaining slightly removed from Duval’s busiest blocks.

Southernmost House Adult Exclusive – Location

Southernmost House is on Duval Street’s southern end and places you practically at Key West’s famous southern marker.

  • Steps from Southernmost Point and South Beach; Key West Butterfly and Nature Conservatory is nearby.
  • Central Old Town location puts Duval Street nightlife and galleries within easy walking reach.
  • Small footprint — you’re staying in a historic mansion rather than a large resort complex.

Southernmost House is ideal when proximity to the Southernmost Point and immediate access to Duval Street matter most.

Rooms: Capacity & character

Casa Marina Key West – Rooms

Casa Marina has a broad room mix across 311 rooms and suites, from pool-view rooms to multi-bedroom lofts and beachfront walkouts.

  • 22 published room types, including Oceanfront Suite with Balcony and 2 Bedroom Oceanfront Loft options.
  • Accessible rooms available; recent renovation refreshed guest rooms and public spaces.
  • Rooms support families and groups, with in-room amenities and connection to resort services.

Choose Casa Marina for variety in room size and oceanfront suite options suitable for families and groups.

Southernmost House Adult Exclusive – Rooms

Southernmost House offers a small set of room types in a historic mansion format, many labeled 'Adults Only'.

  • Room types include Ocean View King, Premium Ocean View Bungalow King with Kitchenette, and 1-Bedroom Suite with Full Kitchen (all Adults Only).
  • All 18 rooms are air-conditioned with flat-screen TVs and premium bedding.
  • Some rooms include kitchenettes or full kitchens; the property lists accessible and ADA‑friendly room types as well as non‑accessible options.

Southernmost House is best if you want a compact, intimate room selection with some suites offering kitchen facilities.

Dining & drinks: variety vs simplicity

Casa Marina Key West – Dining & drinks

Casa Marina has multiple on-site dining options for different moods, from beachside Baja‑Med to a 1920s-era breakfast venue and a cocktail bar.

  • Dorada serves Baja‑Med lunch and dinner and offers a special 'Toes in the Sand' tasting menu by reservation.
  • Flagler’s Restaurant serves breakfast with buffet or à la carte options; Morrison’s Market provides grab-and-go items.
  • The Canary Room is a signature cocktail bar open into the evening with a daily happy hour.

Casa Marina provides more on-site choices for full meals, family dining, and evening cocktails.

Southernmost House Adult Exclusive – Dining & drinks

Southernmost House keeps dining simpler with Seaside Cafe at Mansion and an ocean-view bar/lounge.

  • Seaside Cafe at Mansion serves breakfast (complimentary continental is offered) and operates as the main restaurant/bar with ocean views.
  • Complimentary continental breakfast is provided daily; a single restaurant and bar limits on-site dining variety.
  • Because the property is small, many guests step out to Duval Street for a wider selection of restaurants.

Southernmost House is best for travelers who prioritize location over multiple on-site dining venues.

Pools & beach: resort scale vs inn-level

Casa Marina Key West – Pools & beach

Casa Marina features two refurbished oceanfront pools (one adults-only, one family) and extensive private beach frontage.

  • Adults-only and family pools are oceanfront and recently refurbished; family pool max depth is 4 ft 6 in.
  • Private beach offers chaises, umbrellas, cabanas, beach volleyball, watersports and day rentals.
  • Pool-side cabanas and day beds are available for rent with food and beverage service.

Casa Marina offers larger pool choices and a sizeable private beach setup built for families and events.

Southernmost House Adult Exclusive – Pools & beach

Southernmost House provides a single outdoor pool and immediate oceanfront settings appropriate to a small inn.

  • One outdoor pool with pool loungers and umbrellas; pool hours and access information are provided in property policies.
  • Ocean-view terraces and direct proximity to South Beach and the Southernmost Point replace a large private beach footprint.
  • Smaller property scale means fewer on-site pool/beach amenities compared with a full resort.

Southernmost House suits guests who prefer a compact, quiet pool and being adjacent to Key West’s southern shoreline over resort beach facilities.

Wellness & nightlife: spa and evening options

Casa Marina Key West – Wellness & nightlife

Casa Marina supports wellness with Spa al Maré, fitness facilities, and scheduled beach yoga alongside evening bars and nearby nightlife.

  • Spa al Maré offers massages, facials, specialty treatments, beachfront cabana services, and set daily hours.
  • Fitness center is one of the largest in Key West and includes Peloton bikes, weight and cardio equipment, plus free fitness classes.
  • Nightlife on-site includes The Canary Room; Duval Street nightlife is under a mile away for more evening options.

Casa Marina balances on-site wellness services with accessible nightlife options both on property and nearby.

Southernmost House Adult Exclusive – Wellness & nightlife

Southernmost House focuses on a quiet adults-only stay with straightforward service hours and a nearby lively Duval scene.

  • No published on-site full-service spa; the property emphasizes its ocean-view café/bar and terrace seating.
  • Front desk is staffed during limited hours; property recommends contacting the hotel if arriving late.
  • Immediate access to Duval Street means nightlife is a short walk away, but the hotel itself keeps a quieter, adult atmosphere.

Southernmost House is for guests who want location-based nightlife access but prefer a quieter, adults-only base at night.

Who Wins? Best Pick by Travel Style

Best for families
Seating area with green sofas and fireplace in the Casa Marina Key West lobby

Casa Marina Key West

Casa Marina — family-friendly rooms, a dedicated family pool, kids’ activities, and a large private beach.

Best for location to the Southernmost Point
Southernmost House Adult Exclusive, Key West, Florida

Southernmost House Adult Exclusive

Southernmost House — located at the southern end of Duval Street, mere steps from the Southernmost Point marker and South Beach.

Best for on-site amenities & events
Wide view of the Casa Marina Key West lobby with columns, sofas and windows

Casa Marina Key West

Casa Marina — Spa al Maré, two oceanfront pools, multiple restaurants and extensive event/wedding venues.

Best for an adults-only, intimate stay
Southernmost House Adult Exclusive, Key West, Florida

Southernmost House Adult Exclusive

Southernmost House — small 18-room historic mansion with an adults-only policy and a quieter atmosphere.

Frequently asked questions

Casa Marina Key West vs Southernmost House Adult Exclusive: FAQs

See all FAQs →
Which property is better if I’m bringing kids?

Casa Marina — it’s explicitly family-friendly, has a family pool with child‑friendly depth, and offers activities for children.

Which is closer to the Southernmost Point and Duval Street?

Southernmost House — it sits at the southern end of Duval Street and is literally steps from the Southernmost Point marker.

Do both hotels have beach access?

Yes. Casa Marina has roughly 1,100 feet of private beach and full beach services; Southernmost House is oceanfront at the southern tip with immediate beach/shore access.

Which property has a spa?

Casa Marina has Spa al Maré with beachfront cabana services and daily hours. Southernmost House does not publish a full-service spa.

Covered cabana seating with loungers facing the ocean at Casa Marina Key West.
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