Housed in a triangular architectural stunner with 26 floors, the glassy S31 resembles an art museum. The effect continues inside the property and around its chic, urban-park-like grounds, which include a large turf lawn with massive colorful sculptures, a putting green, a hammock, and futuristic white chairs around a wooden picnic table. Inside, the lobby is open and airy, with soaring windows, fresh orchids, and a huge marble aquarium centerpiece with topiary touches. There are several casual leather sofas and armchairs clustered into private seating areas, and a few tour desks against the far walls. The wine bistro has spectacular, sweeping views of the city through glass walls, while the colorful pastries at 'S Cafe buffet resemble sculptures -- the cafe itself has a fun, trendy look, with Jetsons-esque white bucket seats. Even the outdoor pool is a work of art, with unique plexiglass walls that create underwater optical illusions, and immaculate blue water offset by views of the lawn and its multi-colored modern sculptures. There are guests of all ilk from all over the world --young couples, families, and businessmen drawn to the convenient location and eye-catching property. 

The S31 is located adjacent to Sukhumvit Road, which has bumper-to-bumper traffic throughout the day. There are many shops, restaurants, and street vendors surrounding the hotel, as well offices and residential buildings. The Prompong Skytrain Station is within a 10-minute walk, as are the EmQuartier and Emporium shopping malls, and Villa Market. Queen Sirikit National Convention Center is a 10-minute drive away. Attractions such as the National Museum, Wat Pho, and Grand Palace are within 40 minutes of the hotel via car or public transportation. Suvarnabhumi Airport can be reached within 40 minutes by car.

There are several varieties of room at the S31 and all come with a number of winning features -- first and foremost, the custom-designed beds topped with crisp white sheets. Each room has at least one wall-to-ceiling window and some have incredible panoramic views of the city. Decor is minimalist and somewhat bland: dark wood, striped carpeting, and clean white bedding. Each room also has free Wi-Fi, at least one flat-screen LCD TV, a desk and office chair, and a sleek kitchenette with a small sink, microwave, coffee/tea facilities, and full-size refrigerator -- the top of which contains minibars items. Bathrooms are beautifully tiled in brown marble and are super-modern, with glass windows looking into the rooms (with shutters), and shower/tub combos. Plush bathrobes and slippers are provided. Duplex Suites are especially impressive, designed for larger groups and families, with two separate floors. The Family Residential Suite appears to be built for royalty with a massive wall of windows, contemporary chandelier, marble countertops, and a private saltwater pool. Bathrooms in suites have separate soaking tubs and glass-door rain showers. Guests note that some fixtures lack the polish expected of a luxury property. 

The S31 has a myriad of amenities that put it on par with Bangkok’s larger, resort-style hotels. Wi-Fi and tuk-tuk shuttle to public transportation stations are free. A huge buffet breakfast at 'S Cafe is included in most room packages, and the cafe also serves artistically presented international fare, buffet-style and a la carte, for lunch and dinner. The rooftop restaurant, 100M Wine & Bistro, serves local and international cuisine for dinner, and has incredible views of the city. Uno Cafe serves pastries and casual fare such as sandwiches and salads throughout the day. Room service is available 24 hours. The outdoor saltwater pool is free to guests, as is the modern fitness center, which is equipped with boxing rings. There's also a private yoga studio on the eighth floor of the hotel that is well-regarded. The on-site spa offers a variety of massages and treatments, as well as a sauna and steam room. There are a large business center and meeting space, and hotel staff can help arrange airport transfers, limousines, and laundry and dry cleaning services.