We had a fantastic stay in Lisbon!
I would highly recommend this apartment, it was in a great location right next to Barrio Alto with lots of great restaurants, tapas bars and nightlife. Being on the main road however, it does get quite noisy at times - suggest ear plugs, but this was not a huge problem for us.
Antonio's communication was clear, precise and prompt - I did not know any Portuguese, this was not a problem at check in. Antonio also took the time to show us many great restaurants around and showed us how to book these online. He was very helpful.
The apartment itself is immaculate and was very clean with great amenities - full kitchen and large fridge with a 6 seat dining table. I would be very happy to stay here again.