Stayed for the second time at the Four Seasons Bangkok and was again extremely impressed. The hotel is old, but wears it well, although some of the carpets could do with a replacement. Huge lobby, enormous numbers of staff darting about for you at all times of the day or night. Large rooms with huge beds, huge bathrooms and enormous flat-screen TV with attached DVD player.
Breakfast can be taken outside by the fish pools, which is a nice touch. The hotel itself is designed around open courtyards, which means that you open your room door, and you are already outside.
Only gripes are 1) to keep your room on your last day after 12:00 you are always charged a half-day rate and 2) the internet is incredibly expensive, at around 250 THB per hour or 700 THB per day. Pop across the road to the Siam Paragon (ground floor) for an internet cafe that charges 40 THB for 30 minutes, or try your luck with other hotels free wifi around the pool.
Note also that they are building new apartment blocks all around the hotel, so ask for a room facing the front to avoid the noise.

I had a great time staying 3 nights at Four Seasons Bangkok. The hotel location was good few minutes walk from the skytrain. The area wasn't too busy or crazy for Bangkok. But still, the hotel was walking distance from shopping area and it was convenient.

The hotel service was excellent at check-in, afternoon tea and breakfast. Everyone was smiling and attentive. The room was roomy and very comfortable with a separate shower room and a huge bath tub in the bathroom.

Additionally, the hotel's breakfast buffet was amazing. Best buffet breakfast ever! The food was excellent, the selection of food was excellent, and the restaurant was roomy and nice as well.

I will definitely stay at the hotel again. Oh, the spa at the hotel was great too.

I stayed at the Four Seasons last week with my partner where he was holding a conference. This has to be one of the best hotels we've stayed in for service in Asia. The staff are wonderful - so friendly and helpful but in a genuine way. From the concierge to the maid coming to do the turn down service they provide an impeccable service.

We were lucky enough to get an upgrade - the rooms are incredibly spacious with a lovely walk in closet and huge bathroom! The gym and changing area with steam room is great. The staff pass you a cold bottle of water as you step off your machine and immediately you're offered a fresh fruit juice. The pool area is lovely too but unfortunately there is some construction going on nearby which can be very noisy, so if you're planning lots of pool time, take this into consideration when booking this hotel at the moment.

The hotel is also well located for the train and the huge shopping complexes nearby of Central World, Siam Paragon and Siam Discovery. Overall the entire conference party were really impressed with this hotel - we'll definately go back if we're in Bangkok!

I stayed at this hotel for a conference back in November and its a nice hotel, very comfortable with nice gym/spa facilities. The rooms were roomy (so to speak) and the restaurants were fantastic. The location was also very good for most of the sights you would want to see in Bangkok.