The Clift Royal Sonesta Hotel

Clift Royal Sonesta Hotel is currently owned by Sonesta, after previously being managed by Morgans Hotel Group (the company started by Studio 54 mastermind Ian Schrager and known best for hip hotels like Miami's Delano and New York's Royalton). Set in Union Square, Clift is one of the trendiest hotels in San Francisco. Where most of downtown's hotel bars tend towards subdued and subtle, the Clift's Redwood Room feels like a night club, complete with $20 cocktails, multimedia artwork, and a large enough crowd of late-night revelers that even standing space becomes high-value real estate as the night goes on. The cavernous lobby is dark and moody and selectively lit to highlight a collection of funky furniture whose designer roster is the hotel equivalent of name-dropping, including the memorable and oft-photographed Alice in Wonderland-esque giant chair. Rooms are on the small side for the area (starting at 260 square feet), but the minimalist design and white and lavender décor make them feel larger than they are. The small bathrooms, too, feel less cramped thanks to smart, clean design.

The 372-room hotel actually dates back to 1916, but the Morgans Group completed an overhaul of the property, headed up by Philippe Starck and Ian Schrager himself. The renovation was finished in 2001 and left little evidence of the building's Art Deco history, aside from its stone exterior. If you're looking for history, the Sir Francis Drake and the Westin St. Francis go to lengths to showcase their historic homes.

Anyone who finds themselves less concerned with the scene, and more concerned with amenities and services, might find the Clift lacking: There are well-dressed, good-looking doormen, a 24-hour concierge, and room service, but there's no turndown service, newspaper delivery, or extra perks. The amenities are limited to a business center and a small fitness room.

Overall, the Clift is the kind of place that screams "sexy" and "high design" -- like a set from Sex and the City come to life. Depending on your perspective, that's either its best asset or its greatest liability.

The Clift sits two blocks west of Union Square, which is famous for its couture shops. Home to enormous outposts of Niketown, Saks Fifth Avenue, Tiffany, Macy's, Louis Vuitton, and Neiman Marcus, among others, Union Square is to San Francisco what 5th Avenue is to New York. Locals don't hang out here much, but the square is great for people-watching nonetheless, and occasionally plays host to concerts, small festivals, and demonstrations. If shopping isn't your priority, you might prefer a hotel in a neighborhood closer to some of the biggest tourists attractions, like the Hyatt in Fisherman's Wharf.

• Four blocks from the Powell-Mason and Powell-Hyde cable car lines, which run to Lombard Street and Ghirardelli Square or to Fisherman's Wharf, near Pier 39; a 20-minute ride
• Far from the Golden Gate Bridge, Golden Gate Park, the Presidio, and Haight-Ashbury
• Discount day-of theater seats available at the Union Square ticket kiosk
• Plenty of dining options within walking distance, such as Liholiho Yacht Club and Kin Khao, and close to the Geary Street art galleries and theaters
• Il Caffe at Union Square charges extortionary rates for its coffee and snacks, but you can't beat the setting on a sunny day
• 30-minute cab ride from San Francisco International Airport

Rooms are around 260 to 400 square feet, which is average for a historic building in this area, but can feel cramped. Philippe Starck's minimalist design and strategic use of wall-to-wall mirrors makes the rooms feel larger than they really are, however. The near all-white palette with cool lavender accents also helps keep the rooms feeling as open and airy as possible. But if minimalist design sounds alarm bells, fear not: The furnishings are still extremely comfortable, the technology is modern and top-notch, and the minibar is well stocked (with a few cheeky extras thrown in). If you can get a good deal on an upgrade, it's worth it for a little more space than the basic rooms.

• Beds have pillow-top mattresses, down comforters, and 400-thread-count sheets.
• Bathrooms are small but clean and well designed, with tub/shower units and high-end toiletries.
• Flat-screen HDTVs
• iPod docking station
• Wi-Fi is charged per day.
• Playfully stocked minibars with intimacy kits

The most promoted and most distinctive feature of the Clift is its trendy scene. The hotel has the basic features to keep it competitive in its location and price level -- a business center, an on-site fitness center -- but they're utilitarian and don't particularly stand out. Guests can make use of a larger fitness center with a pool two blocks away for a daily fee. The hotel advertises its "Living Room" as "evoking the spirit of an old English club or drawing room." The space feels more like simply an extension of the lobby, but does provide evening cocktails and a food.

• The touted "Living Room" is a large, dimly lit lounge area with sectional couches, chessboard tables, and backlit photographs of toy animals by Jean Baptiste Mondino. Free coffee and tea are offered here in the mornings, and food and drink service is provided at night.
• Business center with Mac computers, a printer, and fax machine
• 24-hour, utilitarian Fitness Center has six cardio machines, two cable weight machines, and free weights in a fairly small room
• Wi-Fi is charged per day.
• Free bike rentals

The Redwood Room bar, originally opened in 1933 as a classic Art Deco lounge, has been reincarnated as one of the trendiest places to drink around Union Square. Paneled in warm redwood (legend holds that it's all from a single, 2,000-year-old tree), the bar has velvety red sofas and chairs, digital artwork, and warm, sexy lighting. The bar attracts a full house on weekends and a good-size crowd even on weeknights, especially for a neighborhood that's more about shopping than partying. There's no cover charge, but once the hotel deems the bar full, discerning doormen act as crowd control. Because the bar is located just off the lobby, you'll need a key card to prove you're a hotel guest and get back in on busy nights. Fair warning, if you decide to join the bar crowd: People dress to impress here, and it can feel like a pickup scene. Some love the Redwood Room, and others call it cheesy and arguably past its prime. If all you want is a small taste of the scene, it's a great place for a pre-dinner cocktail.

• Open daily
• Signature cocktails are steeply priced

The trendy Velvet Room serves up breakfast in the dimly-lit restaurant that features Murano glass lamps, wood-paneled walls, and (as expected) lots of velvet accents. The food is expensive but changes seasonally and is often made from organic and locally grown ingredients.

• Velvet room serves organic, locally-grown breakfast in a dark dining room adjacent to the Redwood Room bar.
• Redwood Bar and the Living Room provide evening food menus