The apartment was fine for our brief stay in Lisbon. The stairs and the extremely difficult access road next to the monastery weren't good for us at all.
But the bed was very comfortable, the place suited our needs, and Ceu's assistant ordered an Uber for us for 5am to get to the airport and he was exactly on time, and had obviously navigated the steep, narrow, hairpin turn before, so was able to pick us and our luggage up right at the door, and we appreciated that. Some taxis are unwilling to go up that road.
But the location is close to places that we wanted to go, even though the steep road hurt my knees to walk up & down.