We really enjoyed staying here. Antonio is very nice and responds quickly to messages. He even offered to order a taxi to get us to the airport because we were leaving before the metro opens.
The address of the apartment was easy to find. It is close to the metro station and to a couple of bus stops. The bus to the main train station, Lisboa Oriente, only takes about 15 minutes. Being very close to the airport was our priority so the location was great for us (but it is not central if your priority is being close to the tourist attractions). There were some restaurants and a small grocery store nearby as well.
The place itself has modern and clean appliances, the rooms smell clean, and everything looks like it's in almost new condition! There are two other girls who live there permanently (in addition to the other Airbnb room) and they are very nice and helpful. The only upgrade I would hope for is an AC unit in the bedroom because it was really hot at night, even with the window open (we stayed here at the end of May). Otherwise, highly recommend!