This flat is great; don't even hesitate to book it. The balcony is wonderful, it has the view of the sea/river and all the cute Lisbon rooftops. The neighbours are really friendly, and the flat has plenty of space to sleep 2-4 people (there is a separate bedroom, plus 2 sofabeds in the living room).
Goncalo is very friendly and took his time to explain everything to us. The flat is right in Alfama, with a lovely little bakery/cafe just 30 seconds walk. This flat won't disappoint you!