I just return from Hilton millenium bangkok that is fantastic.First of all the location along the river is great with a shuttle boat everything 20 mn to the main pier where you can take the BTS train and boat.Perfect way to circulate in the city. We stayed 4 night in a suite. It was large 70m2 and fully equipped. The access to executive lounge is abosultely worth. Every day they prepared a buffet for aperitive from 6:30 to 8:30 that you can easily considered as a light dinner.
They have a great outside pool where swimming at sunset after a day of visit is really relaxing.
Design of the hotel is superb as well as the service always smiling,supportive and efficient. There are maybe better hotel in Bangkok but the value for money you can get there is really very good.

I visit Bangkok once a year and love to stay along the river for the view and avoid the traffic jam to/from airport. I stayed in Oriental, Peninsula and Shangri-La before and they are all very good. If price is not a concern, Oriental is still the best. When consider the price together, Hilton become my favorite in BKK now. It is much cheaper than Oriental and Peninsular but the stay is comparably enjoyable. The restaurant – FLOW is very beautiful and serves excellent breakfast. We also have buffet dinner there and the food and service are of top standard. The oysters, seafood and Thai food are the best among Asian hotels. Don't forget to go to the pool; it is one of the best in world. No kids play around and we could just “floating” on water relaxingly. It is a totally different world from downtown BKK.

The MHilton is superbly located on the Chaopraya River with a wonderful view over the city. The room we stayed on on the 22nd floor was spacious and well equipped. The staff were very good although probably not up to the standard of the Oriental. It was glorious to be able to sit outside in The Flow restaurant by the river and enjoy a very good buffet breakfast and evening desserts. The pool on the 4th floor with its own beach is a nice little touch. And you can sit in your lounger in the pool on the edge of the water with this lovely view over the city.
This is also a great value for money hotel charging rather a lot less than its riverside rivals but delivering the same product - the Oriental excepted.

This is the best hotel that I have found in Bangkok. It has a bit of a strange location (On the wrong side of the river), but the service is great. I use this hotel as a base when I am in Bangkok. The hotel provides a boat to the metro station.

If you get a chance the Executive product rates up there with all hotels. They really seem to have a flair for the food that they serve.