We flew into Lisbon in the morning, much earlier than our specified check-in time and Mafalda had no problem letting us in right after we arrived from the airport. It made a huge difference since we're travelling with a baby. The apartment was a very comfortable size for four adults and a small child. One thing to keep in mind is that there are lots of stairs (some very steep) as there two levels, and children who walk/run around should be watched more carefully. The elevator was great to have, although we ended up leaving our stroller in the apartment the entire time. The apartment is very central to the city, with lots of shops, cafes and restaurants just around the corner and a lot of the attractions within walking distance. And since it's located on a small residential street, it was reasonably quiet at night.