Have just come back from a 5 night stay as a group of 12 in this apartment - it was a perfect base for us while visiting NOS Alive festival.
The area the apartment is in is lovely. Some very nice shops and restaurants in very close walking distance and the lively Bairro Alto area of Lisbon is also not far to walk.
The apartment itself is lovely and spacious. The bedrooms are all very nice as were the living room and dining areas. Overall a very nice place.
One thing that should be pointed out is that the garden wasn't really useable - very overgrown and messy. This area and also the rooftop terrace are communal for the whole building, but our neighbours didn't make much use of them so it was as good as having the place to ourselves.
João was a great host and very good on communication. Would definitely recommend this apartment and his services!