I absolutely loved my stay in Lisbon. My apartment was just as expected. The hosts were personally unable to pick me up at the airport, but they sent a friend who was very responsive. He even carried my big bag up the stairs-bless him!
In terms of location, the area was very central to other key spots in Lisbon. I felt safe walking around. The only thing unexpected was that there were a LOT of stairs-both in the building itself(at the top story of the apartment building) and getting to the building on top of a hill. Stairs and walking up hills are nothing new to Lisbon-seriously the city is one big steep climb-and it personally wasn't a problem, but it might be an issue for more elderly/less fit travelers.
The locks can be tough on the doors-turning counterclockwise and pushing as I turned helped.
I was told by many locals that it was unseasonably hot in Lisbon during my stay. As the very top story apartment, my first night was pretty warm. Thankfully there was a good fan and leaving it on full blast with the bedroom window open made the area very comfortable for the remainder of the stay.
The apartment was beautiful with lovely views. The bathroom was very small and had no soap or shampoo/conditioner in it-thankfully I brought my own. The shower had good pressure and hot water, however again-very narrow so if you're larger, you might have some issues.
Great wifi.
Overall a great value and I'd definitely recommend/stay again!