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The Mansion on the Sea is an adults-only property. All guests must be 18 years of age or older.

Plan Your Vacation in Paradise

Welcome to The Mansion on the Sea, the only island Inn situated directly oceanfront in beautiful Key West. 

Plan Your Vacation in Paradise

Welcome to The Southernmost House, a historic beachfront Key West boutique hotel.

Guest Rooms
Continental Breakfast, Ocean View
Oceanview, pool, Mansion on the Sea

About Us

Travelers searching for the perfect accommodations when visiting Key West, often look to The Mansion on the Sea, as the quintessential destination in paradise! Our staff promises hospitality from the heart and service with a smile. Visit our website, or call us directly to select your favorite room, make your reservation or inquire about availability for large groups, events, and/or weddings. 

Mansion Front

What We Offer

A daily amenities fee of $27.00 affords our guests the following:


  • A variety of breakfast offerings daily from 8:00 a.m. to 10:00 a.m.

Free Wi-Fi

  • Secure Wi-fi throughout the property

The #1 Island Eatery - The Seaside Cafe at the Mansion

  • On-site premium bar - offering craft cocktails

  • Best Mojitos and Lobster pizza on the Island!

Private Pool

 24-hour access to our private, heated, zero-entry, infinity pool

Pool towels for your convenience

On-site self-parking ($20.00 daily)

Have a guaranteed parking space on our property anytime!

Concierge Services & Full-Service Front Desk

When you come and visit us, why not go out for an adventure? 

Come and talk to us to plan your next adventure!

Feel the Stress Melt Away

Melt away the stress by staying in one of our elegantly appointed, amenity-rich guestrooms, spacious suites, or our stylish Lopez House.

A Tropical Getaway You'll Never Forget

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