The little apartment is in a great location and it has everything you need for a short visit. Plus, it has a laundry machine which is easy and helpful in case you have things you want to wash (bring your own soap though, the host doesn't provide any), and a big TV. The bed is also very comfortable, just note that this is in a small room with no windows where there's pretty much only the bed. During our stay this wasn't a huge problem but it's still something important to note.
The host and her staff are very nice and were waiting for us at our arrival and then gave us the freedom and independence of having our own place (we stayed for a month).
Only a few things to add: (1) the apartment is located in one of Lisbon hills, so be ready to walk up a very high hill + outdoors stairs to get back home. (2) The apartment sometimes has random sewer smells, so smelly it's impossible to breath. (3) Wifi connection doesn't work very well. If you are planning to wfh from here, I advise you to go somewhere else for better wifi connection. (4) Don't buy any frozen food/ice cream, the fridge doesn't have a freezer. (5) There is no oven nor hair dryer.