Hotel Habita
Monterrey, Mexico

Hotel Habita Monterrey has given boutique-hotel aficionados a reason to detour to northeast Mexico. In the 39 rooms, floor-to-ceiling windows and a stark black-and-white palette make it feel almost as if you're floating.
from $175. See Full Hotel Review

Blue Lime
Phnom Penh, Cambodia

It's easy to confuse the Blue Lime with an apartment building—only a small gold plaque next to a sliding wooden door confirms you've found the 14-room hotel, opened last year by French expat Alexis de Suremain. Inside, all of the furniture (including the built-in shelves, tables, and window seats) is shaped from concrete.
from $40 with breakfast. See Full Hotel Review

Hotel Vertigo
San Francisco, Calif.

Union Square's 102-room Hotel Vertigo takes its theme to great heights. Named after Alfred Hitchcock's 1958 thriller Vertigo, which was filmed on location and plays on a loop in the lobby, the property preserves the dizzying spiral staircase featured in the movie, while also sprucing up most rooms with white tufted-leather headboards and orange-vinyl chairs.
from $129. See Full Hotel Review