Had a great time staying at Filipe's place! It made a great home base during our week in Lisbon. It's nicely located, with only a 10-20 minute walk to major sites. The place was clean and check in was very straightforward! The place does have a slanted roof so you may have to duck in some areas.
The only negatives we have are: the bed is a double and while comfortable, it is very squeaky (causing you to wake up whenever you or your partner turns over), there is some road noise (but that's usual for the city), and there's a building under construction two doors down, to being to hear a construction noises starting 8am.
We'll definitely be staying here again if we're ever back in Lisbon!