Along with an outdoor pool, this smoke-free hotel has a restaurant and a bar/lounge. Free cooked-to-order breakfast and free WiFi in public areas are also provided. Other amenities include self parking, coffee/tea in a common area, and a picnic area. Housekeeping is available on request.
Southernmost House - Adult Exclusive offers 18 air-conditioned accommodations with coffee/tea makers and designer toiletries. Each accommodation is individually furnished. Pillowtop beds feature premium bedding. 42-inch flat-screen televisions come with premium cable channels.
Bathrooms include showers, complimentary toiletries, and hair dryers. This Key West hotel provides complimentary wireless Internet access, with a speed of 100+ Mbps (good for 1–2 people or up to 6 devices). Housekeeping is provided daily.
Recreational amenities at the hotel include an outdoor pool.
The recreational activities listed below are available either on site or nearby; fees may apply.
The hotel offers a restaurant. A bar/lounge is on site where guests can unwind with a drink. A complimentary breakfast is offered each morning. Wireless Internet access is complimentary.
This Victorian hotel also offers an outdoor pool, a terrace, and multilingual staff. Parking is available onsite for a surcharge.
Southernmost House - Adult Exclusive is a smoke-free property.
A complimentary cooked-to-order breakfast is served each morning between 8 AM and 10 AM.
Seaside Cafe at Mansion - Overlooking the ocean, this café serves lunch and dinner. Guests can enjoy drinks at the bar.
Property amenities
Internet
Available in all rooms: Free WiFi
In-room WiFi speed: 100+ Mbps (good for 1–2 people or up to 6 devices)
Available in some public areas: Free WiFi
Parking and transportation
Self parking on site (USD 40 per night)
Onsite parking includes off-street options
Food and drink
Free cooked-to-order breakfast available daily 8:00 AM to 10:00 AM
A bar/lounge
A restaurant
Coffee and tea in common areas
Restaurants on site
Seaside Cafe at Mansion
Things to do
Outdoor pool
Conveniences
Limited-hour front desk
Guest services
Housekeeping (daily)
Multilingual staff
Outdoors
On the waterfront
Outdoor furniture
Picnic area
Pool loungers
Pool umbrellas
Terrace
Accessibility
If you have requests for specific accessibility needs, please contact the property using the information on the reservation confirmation received after booking.
Grab bar in shower
Grab bar near toilet
Hand-held showerhead
No elevator
More
2 buildings
3 floors
Built in 1897
Smoking not allowed
Victorian architecture
Room amenities
Bedroom
Pillowtop mattress
Premium bedding
Bathroom
Designer toiletries
Hair dryer
Shampoo
Shower
Soap
Toilet paper
Towels provided
Entertainment
42-inch flat-screen TV with premium cable channels
Streaming services
Food and drink
Coffee/tea maker
More
Air conditioning
Individual furnishings
Iron/ironing board
Policies
Check-in
Check-in start time: 4 PM; Check-in end time: 10 PM
Late check-in subject to availability
Minimum check-in age: 21
Check-out
Check-out before 11 AM
Special check-in instructions
The front desk is open daily from 8:00 AM - 10 PM
Front desk staffed during limited hours
If you are planning to arrive after 8:00 PM please contact the property in advance using the information on the booking confirmation
Information provided by the property may be translated using automated translation tools
Renovations and closures
The property will be renovating from April 15 2026 to December 31 2026 (completion date subject to change). The following areas are affected:
Exterior
Renovation work will only be conducted during business hours. Every effort will be made to minimize noise and disturbance.
Access methods
Front desk (limited hours)
Pets
Pets not allowed
Children and extra beds
Children younger than 18 are not allowed at this adults-only property; all guests 18 and older are welcome
Rollaway/extra beds are not available
Cribs (infant beds) are not available
Property payment types
Important information
Fees
You'll be asked to pay the following charges at the property. Fees may include applicable taxes:
Resort fee: USD 33.75 per accommodation, per night
The resort fee includes:
Beach towels
Concierge service
Housekeeping
In-room bottled water
In-room coffee
Pool access
We have included all charges provided to us by the property.
Optional extras
Self parking fee: USD 40 per night
The above list may not be comprehensive. Fees and deposits may not include tax and are subject to change.
You need to know
Extra-person charges may apply and vary depending on property policy
Government-issued photo identification and a credit card, debit card, or cash deposit may be required at check-in for incidental charges
Special requests are subject to availability upon check-in and may incur additional charges; special requests cannot be guaranteed
Minimum Spring Break check-in age is 24 years old
This property accepts credit cards; cash is not accepted
Cashless transactions are available
Noise-free guestrooms cannot be guaranteed
Safety features at this property include a carbon monoxide detector, a fire extinguisher, and a smoke detector
This property has outdoor spaces, such as balconies, patios, terraces which may not be suitable for children; if you have concerns, we recommend contacting the property prior to your arrival to confirm they can accommodate you in a suitable room
We should mention
This property does not have elevators
Pool access available from 8:00 AM to 10:00 PM
Children 18 years old and younger are not permitted at this adults-only property
Only registered guests are allowed in the guestrooms
Property is also known as
Southernmost House
Southernmost House Hotel
Southernmost House Hotel Key West
Southernmost House Key West
Southernmost House
The Southernmost House Hotel
The Southernmost House Hotel Adults Only
The Mansion on the Sea Southernmost House in the USA
The Mansion on the Sea - Southernmost House in the USA Hotel
The Mansion on the Sea - Southernmost House in the USA Key West
Southernmost House - Adult Exclusive Reviews
Reviews
9.4
Exceptional
All reviews shown are from real guest experiences. Only travelers who have booked a stay with us can submit a review. We verify reviews according to our guidelines and publish all reviews, positive or negative.
Rating 10 - Excellent. 781 out of 1000 reviews
10 - Excellent
781
Rating 8 - Good. 138 out of 1000 reviews
8 - Good
138
Rating 6 - Okay. 51 out of 1000 reviews
6 - Okay
51
Rating 4 - Poor. 21 out of 1000 reviews
4 - Poor
21
Rating 2 - Terrible. 9 out of 1000 reviews
2 - Terrible
9
9.6/10
Cleanliness
9.6/10
Staff & service
9.2/10
Amenities
9.0/10
Property conditions & facilities
Reviews
10/10 Excellent
Jeffrey
Feb 27, 2026
Liked: Cleanliness, staff & service, amenities
The experience was splendid, and the entire staff of The Southernmost House are professional and courteous. The breakfast was delicious and abundant. The location is wonderful, on the quiet end of Dubal. The pool was heavenly.
Staff very courteous ! Building very historic!
Things Wrong-
1)- During a cold week- no heat in room 104
2)- During one day- ho hot water in bathroom
3)- Goodwill Kelwin chocolate had bugs when opened
4)- Advertised Heated Pool had no heat
This Historic Building Deserved improved conditions eliminating above
.
sam
Stayed 4 nights in Feb 2026
8/10 Good
Xun
Traveled with partner
Feb 10, 2026
Liked: Cleanliness, amenities
Convenient location. Staff very friendly and accommodating. Nice view. Seaside cafe was great. Moondog pastries available for breakfast. Insulation probably not great and could hear roosters crowing at night even on the top floor.
What a gorgeous property, the mansion is gorgeous and the views were awesome. It was so nice to walk out of the property and enjoy all that Duvall street has to offer without ever needing our car.
This property is beautiful and interesting for its rich history. The cottage rooms are right on the water. Staff is amazing and the breakfast is delicious from local bakery.