If you walk down the hill a bit from Poblado square, till you cross the first big main road (not as far as the Metro), along that road you can find some good quality restaurants used by business people.
The famed 'Mansion' is half way between Poblado Square and the main road, the metro a bit more than that distancve again, bottom of the hill.
Mansion has often allowed guests to the nightclub, which has a few 'certified' p4p (ie checked out and approved by the management). You can meet with others there and ask for tips if you need.