A good budget option if you're in Lisbon for a short visit, want to be immersed in the atmospheric old town, and are planning to be out and about on foot during the day. Extremely convenient central location, and surprisingly quiet considering how close it is to bars & restaurants. Helpful and responsive host, lots of useful info for check-in etc. I also appreciated the comfortable bed and good WiFi.
The apartment is in a historic building and the plumbing is not the most modern; hot water only lasts long enough for one fairly brisk shower. There is only one small window above the door for ventilation and I found it hard to get the place aired out without leaving the front door open, which I obviously couldn't do at night (it opens directly onto the alley). Also note that you can't get a taxi all the way to the apartment - it's a short (1-2 min) but steep uphill walk from the Museu do Fado, which is a good pick-up point for Uber etc. It was easy enough for me but something to bear in mind if you're really laden down with luggage or if you have mobility issues.