I stayed with my father for 4 nights. It was perfect because we could both have our own bedroom. I recommend the size of the apartment for 3 people. I think it might get a little crowded with 5 though.
We loved the location because it‘s a really quiet area but still in walking distance to many sightseeing points. Unfortunately there was noisy construction work outside the window, but it did not bother us since they started only after 9am and we were mostly outside during the day.
The kitchen was equipped well for small breakfasts, but I wouldn‘t recommend cooking a big meal there. Coffee machine or kettle is not there any more, but we used the stove for boiling water instead.
The communication was perfect! I especially want to thank Diogo for the quick help when we had a problem.