I have stayed in a lot of Airbnbs and Sérgio's apartment is easily one of the best I have ever rented. The apartment is accurately shown and described and is very clean and very well decorated. It is clear that Sérgio and his partner Joana put a lot of care and effort into making their Airbnb rentals top class. The apartment is in a great area of town and is an exceptional value for money. My wife and I stayed there for 4 nights with my parents who are both over 80 and everyone thoroughly enjoyed our stay. This apartment (or one of Sérgio's other units) will be my first choice on our next trip to Lisbon. As many other have noted, Sérgio's guidebook required a lot of work to put together and is an excellent resource.