As Roho says, very important to get your lawyer to ask for a debt certificate from Resortalia the Administrator, especially if buying from a bank.
Also get them to check that IBI fees have been paid to Town Hall.
Therecare a number of legal cases currently ongoing by various Communities against the developer on the basis of design defects on some of the blocks.
No structural problems but poor design has created external and sometimes internal cracks.
Check for any damp or leaks from roofs or above depending on your floor.
Resortalia should be able to supply you with all relevant info such as fees, bye laws etc.