Albertino was very nice and helpful : he got me from the subway station, was available when our heater ran out of gas when we had a minor electricity problem and also gave me nice pointers regarding what to do in lisbon.
As for the apartment (which is really a building) it is perfect for large groups :there was even too much space for our group of 12.
I recommend with no hesitation albertino, his house and the wonderful city of Lisbon