Count,

I'm sure you are unaware but Peteropny is the FOREMOST expert on Bangkok on this board. His Grandparents live there. His advice is sound on hotel location.

The River is magic. If you have little time in Bangkok, the important things for you to see as a first time visitor can be easily accessed by obtaining a day pass and hoping on and off one of the many river "shuttles" geared toward tourists. There is some commentary while onboard and they are less crowded than the usual river transport. Just riding the boat itself is fun and a great way to try to cool off! You will also be given a map/guide to riverfront attractions and water.

The Shangri-La and Oriental properties are very close to the Skytrain if you want to venture away from the river (like to Patpong in the evening). The Skytain is clean and AIR CONDITIONED and a great way to beat traffic. I've stayed at the Royal Orchid Sheraton a number of times and have enjoyed the location on the river next to the River City shopping complex.