It is a charming apartment, which is centrally located in the historic Alfama district at the level of the coast. The bus stop Alfândega with lots of lines running is pretty close. Train, metro, and tram stops are also nicely reachable. Small stores for the daily needs and plenty of restaurants are basically next door. The apartment does not face towards any major streets, so you will not hear traffic noises.
We were welcomed warmly and had a smooth, helpful, and informative check-in.
The apartment is furnished nicely and elegantly. Especially the kitchen and bathroom seem to be newly installed. It is spacious, clean, and the AC is working nicely (it takes some time to start up, but that is no issue knowing about it). There is an elevator, so you do not have to carry your luggage upstairs. (It is a bit slow, but that is not the host's fault, as it is a historic building with the elevator shaft being originally designed as a freight elevator.) The apartment faces away from the water. Given how steep Lisbon tends to be, this means that the first upper floor, on which the apartment is located, is basically subterranean. One window faces a small air shaft, while the two others face stairs going up to the outdoor seating of a nearby restaurant. This might be a point to consider if you only feel comfortable when being able to have a reasonable view out of the window.
During our stay, we faced issues with the Wi-Fi signal, as it was quite weak in our apartment. However, I think that this is an easily fixable issue and might not be there for your next stay, dear reader.
For parking nearby, the host recommended us the Parking Terminal de Cruzeiros de Lisboa. When downloading the Telpark app, you can reserve a space there for a reduced rate (8€ per day as of now, with decreasing prices for longer durations).