Everything was great. Lobby design is beautiful. Room was large and bed very comfortable. Buffet breakfast was tasty. The hot and cold jacuzzis next to the pool were great for relaxing in. There are a separate sauna, and a steam room. The gym is huge and very well equipped, with 1-2 classes per day. The games area included driving simulators, playstations, board games, pinball, darts, foosball, table tennis, air hockey. Big playroom for infants / toddlers.
Location-wise, the hotel is opposite One Bangkok (Parades block). Lumphini MTR station is a 5-min walk away, and directly connects to One Bangkok.