You can tell where the real Torah is by signs. In any case, to be on the safe side I recommend learning Torah at home alone and never going near any religious synagogue.
In fact learning at that breslov place I sometimes feel a kind of "help from heaven" סיעתא דשמיא in my learning. Like just today I walked in and I was already exhausted from running around, but i sat down with a Gemara and looked at a Maharam on a Tosphot in Sanhedrin 63 and it suddenly and instantaneously became clear to me what Tosphot is saying.
David, the fellow I learn with thinks that the best sign of a bad place is when then throw out people that are sincere.