I only stayed in Oscar's apartment for one light because the airline cancelled my flight.
Oscar is efficient in his responses to messages and I had good communication with him. As in most buildings in Lisbon, there is no elevator and need to climb steps to 2/F. Oscar has been very kind in helping me with my super heavy luggage both when I checked in and out. There is a space for storage of luggage under lock and you can come back to pick up the luggage afyer check out. This is a super good arrangement.
Without luggage, it is a 5 to 6 min walk from Martim Moniz metro station, going up a little uphill to the apartment. The apartment is conveniently located for the sightseeing places. The tram 28 is there and it is just a 5 min walk to Rossio and Baixa Chiado where the sight seeing places are. Tram 15 is also there for going to Belem Tower.
The room has a window which opens to a small balancy and bed is comfortable. There is a heater in the room if you need it. Water pressure is very good and there is always hot water, also rare to find a little window in the bathroom for better ventilation.