The apartment is located nearby most of the attractions but not in the best neighborhood...
The attention received by Teresa was outstanding! She was texting us the whole time to see what we need. She helped us with an early check-in and booked a taxi for us at 5 am the day we left. The apartment doesn't have elevator and it's in a 4th floor (it's advertised so we knew that before booking) but the stairs are very tight so it's difficult to carry bags up to the apartment. We struggled a bit with the pans for cooking and there was only one glass but as I said before we could always text Teresa and she would take care of every situation. It was our first time in Lisbon and it was a wonderful experience!