Tiodavid 99 - The first thing to do is to think about what it is you want from the session? For example BBBJ, great massage with happy ending, incredibly beautiful women with performance not a priority, GFE, performance is most important with attractiveness at least 7 or above, nice environment and ambience, price, etc.
Other mongers can give you some guidelines but as some have said above, it is best to take a little time and explore. If you get a wingman to take you to a few places you will really enjoy it. Many such outings begin by walking down Calle 11. If you do you will walk by Relax, Eros, Idem and La Mansion. That is a start. By turning right or left a few more blocks will take you to another three or four establishments.
It is really cool. You're going to like it.