The best month to come to thailand is April if you are into Songkarn s festival and its summer. November, December and Jan thai ppl call it winter but i guess its not that cold for european ppl About SPG hotel that i ve tried in bkk hmm Le meridien bkk - great service, nice view, stylish, breakfast is kinda ok, nice lounge, the pool is small, bad location too far from skytrain. Sheraton Grand Sukhumvit - great location, few steps to skytrain, breakfast pretty good, Best service but old rooms, fantastic pool, lounge and cocktails just great. Westin - great location just oppersit to Sheraton. service is ok, old rooms. St regis - Very nice room, Nice view if you r get the right room, great location just next to the skytrain, service is just OK, the pool nothing special,Wine Lounge not many selection by glass. About the food thailand very famous about Street food start from 30baht but becareful you probably get sick. also a lot of nice restaurant in bkk