We have very much enjoyed our stay at this apartment. We travelled during COVID restrictions so we did not experience the nightlife of Bairro Alto, but I guess it should not be that much of a problem. There is a separate bedroom with two single beds at the back of the apartment which is very quiet. The noise you hear is from other apartments, as the walls are rather thin. Be aware that the shower does not move any higher than about 1.85, so if your taller than that you have to bend your knees. Luis and Paula communicated very clearly and were welcoming. The apartment is located in the centre of vibrant Bairro Alto, so the perfect place for a trip to Lisbon.