Millennium Hilton, Bangkok
Because we only had 18 hours, and from that subtract check in / out and sleeping, that did not leave us with much time for any activites outside the hotel, which turned out not to be so bad, we did find enough things to do inside the hotel area to pass the time of day.
The weather conditions did allow us to enjoy a very nice view from the 31st floor, and afterwards a visit to the pool on the 4th floor.
Now before all of you go running off to this hotel with thoughts of getting some really nice sunset or sunrise pictures for your photo albums from the 31st floor, i would like to point out one small but rather important fact ... The elevators will only operate when you first place your Room Key Card in a slot located next to the floor selection panel, so if your not a guest, or not with someone who is a guest, your not going to get past the ground floor.
For those that do make it past the ground floor, a ride to the top floor does offer some nice views of Bangkok.