My family (wife + 2 children 4 and 7) and me have stayed for 4 nights in February. The communication with Monique was quite good and we got friendly and practically immediate responses and helpful tipps. The information folder in the flat was really helpful. We even agreed upon an earlier check-in to leave the luggage in the flat for an afternoon walk.
She refered us for the check-in to her co-host while she went on a journey herself.
Long story short: The check-in happend even later than on the description page an we waited with the children and the luggage in front of the building on the for Lissbon quite typical narrow, steep sidewalk. The co-host informed us of the delay because of a funeral about an hour before the with Monique agreed time. Not ideal.
The flat on the other side is really great. It's really big with a great view on the Tajo with the terrace. It's in the middle of several bus stops and tram stations and you have a small store nearby.
All in all a great stay.