I think this is the hotel you want, it changed its name but is part of the same group still (I think). It was recommended to me a while ago as a nice budget hotel but I thought it to far out of the main area for my needs;
I think these are two different hotels. But I received an e-mail from the sawasdee-hotel management and they wrote that the Woraburi Thonglor is not open at the moment. May be some day 2007.