If you’re loud during sex or the room next to you is full, you will hear them.
You can also get these massages in Kapoo Clubs, see my article here about Kapoo Clubs in Bangkok.
Tips are not necessary but not uncommon either, it’s really up to you.
Soi 11 would be your cheapest place for a happy ending massage, but you’d also get the worst service and rooms, Soi 33 and 23 would cost a little more, but the girls tend to be cuter and much better-looking rooms.
Prices tend to vary from place to place, the standard rate seems to be around 500 baht for a hand job in Bangkok, this is excluding the actual price of the massage.
Some Thai girls may ask for more, so always be ready to negotiate, some won’t Some Thai girls may ask for more, so always be ready to negotiate, some won’t do it for less than 1,000 so just pay whatever you’re willing to pay.