Very good place to go when it is raining on the outdoor crags :) We visited twice during our trip to Málaga, there is only a short registration required, very uncomplicated. There are 11 or 12 autobelays, each with at least 2 routes to climb, there were some easier route up to 5+, but most were between 6a and 6c+, one 7. You can also do lead climbing, but it doesn't make much sense, you can just use the autobelay :) otherwise for lead you need to wear a helmet and do a short test with the guy from the gym, plus only grigri is allowed as a belay device.
In the whole gym only liquid chalk is permitted.
Bouldering was also good, we were there in the mornings so it wasn't crowded
Plus also a nice warm up/exercise area upstairs
Parking in the street is close to impossible, people mostly double park there since it is a busy industrial zone. But there is a big dirt parking area in a street parallel to this, nothing happened to our rental car there, but I would still recommend not to leave too much stuff inside the car
All in all a nice place!