Mario was really kind in showing us everything. We didn't have any problem at all in getting to the apt and getting the keys from Mario. The apartment is really spectacular, brand new with A/C in almost every room. The Washing machine was a big plus as well.
The area of the Apt is extremely nice with lots of restaurants nearby. Some of the restaurants in the area might be a little expensive, but we tried as well the Restaurant below the Apt which name was "Estibordo" and it was simply amazing. Its a local restaurant with the nicest people working in there, and the prices were incredibly good as well (we went two nights in a role).
We will definitely go back to this Apt when we return to Lisbon.