It is a good apartment! Located about a 15min walk from downtown, where the interesting activities take place. You’ll have to climb a lot of stairs from the Museum the Fado (the first meeting point) up to the apartment, which has no elevator and is located in a third floor. The place is very nice, modern and very well decorated. A party of 5 can comfortably stay there. The bathroom is also very nice, not very private, though.
Good experience! Would not recommend for elderly people, since the stairs may represent an obstacle with the luggage.