Any School
There's a saying: If it looks too good to be true, it probably is too god to be true.
Don't let all that fancy simulator time in A320 fool you. One still has to know how to fly an airplane at the end of the day.
Keep your eyes open and ask questions around from people that have been through the school, be it Aeromadrid or any other school. Those currently going through sometimes fail to objectively evaluate their training provider as it for some people means that their decision to attend was not the correct one. Sort of "loss of face" syndrome.
When I made a plan to attend a school it was based on information I gathered from brochures etc as Internet in those times was non-existent and from the few people that I know had been to the school. If I knew then what I know today about that place, I would have taken a totally different way.
Remeber. Schools have one and only one purpose: To make money. They will do their best to get your business and your money.