Dear Thorstein
We are in block 16 had ours installed by our keyholder last year, he uses a local firm, who did a very good job and have done a number of the penthouses already - the cost for the larger side of the terrace (not including the area by the outside cubboard was 700 Euros last July)
I am sure you could pay a lot less and a lot more if you wanted but we are very happy with it and it makes a big difference in july /august and is must for rental
Mail Alan Milton at Azure for any details:
azureproperty@gmail.com
Rgds
Mark