I stayed for 2 weeks. The place looks exactly like the pictures, it's a large apartment with 5 private rooms. The view from the kitchen is even better than the pictures.
Room A is OK for one person though there wasn't enough room for a desk, quite cluttered.
They clean the shared areas (kitchen & bathrooms) every days, except Sundays so the place stays very clean. Some guests can be nasty and leave the bathrooms and kitchen in bad conditions but that's not the host's fault, people are like that.
Overall, a nice place to stay for a few days in Lisbon. A bit overpriced and not fully centric (30 min walking to Alfama). The neighbourhood is very nice, with cafes and little bars and discos.