and enjoy each other!!

That's obvious and enjoyable to see.

The Marriott Resort & Spa does offer twin-bed rooms. Did you mean to say that none are available for their time in Bangkok?

http://www.flickr.com/photos/50079735@N07/4662420861/

Guest room, 1 King or 2 Twin/Single Bed(s), City view, Balcony
Guest room, 1 King or 2 Twin/Single Bed(s), Chaopraya River view, River view

i believe the question is not about twin beds (for one person), but rather mutiple large beds like double double or queen queen rooms, which marriott riverside does not currently have..

That's correct, looking for one room with two queen or king beds.

Update on the Marriott Bangkok Resort and Spa being rebranded as Anantara BKK Riverside Resort Spa. If you book with Marriott prior to (I believe) Oct 31, Anantara will honor the price, though as Ciccerone stated previously, there will be no Marriott points or redemptions.

My original post was to find a river area hotel with water taxi that would accommodate a family of 4 without having to get two rooms. There were no Marriotts that would work (at least 2 double beds) so rhkkmk suggested the Chatrium just across the river. If anyone is looking for quad accommodations this is a nice option. They have Grand Suites with 2 bedrooms (1 king/2 sgl) so great for a family, also has a kitchenette and can get city view or private balcony.