My family and I had a really pleasant stay at Louis' apartment. We didn't meet Louis, but his colleague Patricia was very welcoming and positive, when we arrived - even though we were late (because the parade of the Portuguese soccer team blocked half of Lisbon).
The apartment is nice and looks like the pictures, and the location is really nice too. Close to both the old part of the city, shopping, and with a nice view to the ocean from the terrace.
All in all a good experience :-)