Southampton Harbour Hotel and Spa
Staying at this snazzy five-star hotel directly on the marina is like staying on a cruise ship (or perhaps a super-yacht) without ever leaving land, a design theme reinforced by tiered balconies and floor-to-ceiling windows. There's an excellent spa, a penthouse bar with roof terrace, a heated indoor pool, a cinema, and a seafood-oriented restaurant, The Jetty, that's considered one of the city's best. Rooms, some with balconies overlooking the marina, come with luxurious touches like 400-thread count sheets and complimentary decanters of gin and sherry.