We stayed here as a group of five adults and would definitely recommend it! The flat was great - definitely as described, clean, well equipped, and easily accessible.
The location is excellent - you step out into the heart of Bairro Alto and it's great restaurants and bars, and you're within walking distance of the main site and attractions.
The host is excellent - really quick to respond to requests and queries both before and during the stay.
We had a great time and would definitely stay here again!