This was a great flat for a base to explore Lisbon. As several people have mentioned, there is building work going on during the day in the building opposite. BUT if you are going to be out in the day then this shouldn't be a problem. We really enjoyed our stay here and found both bedrooms comfortable (each with air conditioning) and the hosts were very kind and easy to contact for any questions. It's a short walk to Santa Apollina station and you are right in the old part of town which is atmospheric and beautiful.