We enjoyed our stay in Lisbon. Carlos picked us up at the airport and gave us an entertaining ride to the house, including a bit of a tour. The place is nice, I wish we could have stayed longer but they were booked. The only caution I would give is that the bathroom is tight for larger guests.
We weren't sure about the neighborhood when we looked at it on Google Earth, but it was comfortable and we felt quite safe walking around at night.
The pocket wifi was so nice to have! Such a great idea!