Sergio is literally the best host I've ever had with AirBNB. He was waiting for us to arrive, had snacks and refreshments waiting for us, as well as took his time to show us the apartment and review a map of the city with some suggestions of what to do. He is literally the best!
The apartment is very nice and spacious. I would just advise any people who may be traveling in the winter that there isn't central heating, so it can get a bit chilly if you don't have the portable heater in your room.
Location wise, it's very central in terms of transportation so really easy to get to all the top destinations in Lisbon.