Great place, quick communication with the owner. The pictures give a good overview of what it is like in real.
We were there with a group of friends in October 2015 and can certainly recommend this. Wifi works great throughout the whole appartment and everything looks new and clean.
It is located just outside the city centre and therefore more quiet. Supermarket and coffee store are just around the corner. The city centre can easily reached by metro (3 mins away) or taxi which is cheap. This will take you only 5 minutes.
If you want a nice place for exploring Lisbon with a group of friends/family, this is your place!