Also, if you need a good and hard Thai massage, Nimman Massage & Spa is a decent (100% clean) massage joint at Silom Shopping Complex. At first I sort of doubted it, because it was not crowded, but it is indeed very good, even better than those tourist-infested ones. For 500 baht, you will get a solid, authentic Thai massage for 90 mins. A good start to your patpong night
5th floor, Silom Shopping Complex.