I did my flighttraining in Spain completely. Have been flying 320s now for a few years.
There are many dodgy schools around. However there are also a number of very good schools.
The good ones:
FTE Jerez
AeroMadrid
Adventia, Salamanca
Apart from FTE and Adventia I would recommend Gestair Flying Academy. From my point of view Aeromadrid is not a good choice at the moment. It used to be one of the best flight schools in Spain, however, is having very bad economical and management problems at the moment. Almost 90% of the fleet is U/S and they had a fatal accident some weeks ago.