It doesn't have much to do with the place, but who massages you. Some ladies are really good, some not so good. It's a lucky draw. If I find a good masseuse, I stick with her. If you're looking for a good massage, skip the pretty ones and the skinny ones.
If you're looking for other delights, go straight to Soi 13/1 where you can find private rooms for the same price as your curtained off tables, and with shower facilities too. You won't normally get a good massage in these establishments.