Bro i can recommend Citichic. It's guest friendly so u can bring a girl back at no extra fees charged to you. About 88sgd per night. The room is splendid! Tried this on my previous 2 trips this year. No regrets. Service wise is top! The rooms are nice as well. If you want, i can send you some pics i took. Can chk it out here:
CitiChic Boutique Suites. Book thru hotel agent much cheaper than their website of course. Cheapest online rates from this hotel agent:
Citi Chic Hotel Bangkok Thailand
Happy cheonging in bkk.