I'm at the tail end of my second stay at Rembrandt Towers. I really, really like this place. I've stayed at places that cost 3 or 4 times more that I enjoyed much less.
The service is incredible. While I don't have much experience with high end rooms in Asia, hotels like Four Seasons and Fairmont in North America don't come close to this place. I call room service and 10 minutes later the food is at my room. Twice I needed help with my computer, the first time connecting to high speed internet and the second replacing a faulty cable. In both instances the IT guy was in my room less than 5 minutes after I called. Front desk staff are very helpful, courteous and efficient.
The size of the accomodations is a major plus. For well under US$100 you can get a very large, comfortable, quiet one-bedroom apartment with living room, bedroom and kitchen -- about 800 square feet I think. Furnishings are nice and include two televisions.
Location is great! You're about 5-10 minutes walking time away from both the skytrain and the subway. This really saved me a lot of time and annoyance, not having to deal with the notorious traffic here. There's a convenience store next to the lobby.
Another thing I like is having the facilities of the Rembrandt Hotel, a 4 star hotel IMO, next door. The Mexican restaurant there is considered best in Bangkok, while Indian restaurant would be in the top 5. Fitness facility is good too. While I didn't hang around the pools in the Apartment or Hotel, they looked very nice and included bar service. Khun Oi in the Business Center was very efficient and helpful.
In the general area, I highly recommend the Dim Sum Lunch Buffet in the Chinese restaurant at Windsor Hotel, about 2 or 3 minutes walking time away on Soi 18. On Soi 20, Food House serves very good, reasonably cheap Thai food. The steamed sea bass in particular is good. And there are lots of the typical street vendors on both Soi 18 and Soi 20 serving up a variety of treats. Also worth a mention is La Rueda on Soi 20 -- they have the best (only) Mojitos in town and salsa music/dancing nightly.
This is a sincere review; I've posted a couple here on tripadvisor that weren't so nice. While I don't want to show my Email address or write out my name, as I'm a little paranoid about spam and having my name appear in search engines, you're welcome to give me a call for further info. The first three letters in my last name are "Kam" and the last two are "on", and I'm the only one in the phone book in Midland, Texas.
Have fun in Bangkok!
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.