We've had a wonderful stay in Lisbon at Sergio's place. It has everything you might need for your stay. The position is very good, with easy access to public transport. Sergio's guide to Lisbon is great, giving you plenty of things to visit and very good recommendation for places to eat. Joana was very friendly and made the check-in a breeze and explained the travel guide. The only issue was the upstairs neighbors that woke us up with their squeaking floors, but that's not really something that anyone can do something about. Overall a great experience which we can definitely recommend to others.