Overall we enjoyed our stay at Nuno's place very much. The space is very clean and tidy. Although it seemed smaller in reality than it does in the photos, I think it is still quite a spacious apartment when you take into account that most apartments in Lisbon are not very big.
A few details we thought were lacking - bedside lamps in all the rooms (one room had none), pillows (the comfort levels would benefit greatly from updated, better quality pillows) and some instructions to go with the electric stove top would be useful as well.
The location of the apartment is perfect if you want to be close to places like LX Factory, Doca de Santo etc. Everything is within walking distance and public transport options are right on your doorstep.