I've stayed at the Eastin Grand Sathorn twice now. I chose it because of its proximity to the Myanmar Embassy and the BTS, but besides that it represents one of the best values in high-end hotels in the entire city, with great staff, amazing amenities, an excellent gym, the best access to the BTS you could hope for, great breakfast, and even some wonderful street food options right out the front door. I couldn't recommend the place more and unless I have to stay in another part of the city for business reasons, this is the hotel I will always stay at when visiting Bangkok.