The listing currently states a fair way down at the bottom that this is in a lively and busy neighbourhood. This is very much an understatement. It is true that Bairro Alto is a busy neighbourhood with bars and restaurants and people out late, however to be clear this apartment is directly opposite 2 bars, both only a couple metres from the property, which play very loud music til 2am. If you head one street over in most other directions, you will still be in Bairro Alto, but things will be much quieter.
It will be virtually impossible to sleep here any earlier than 2:30am, without very very good ear plugs.
The apartment is nicely furnished, and in brilliant proximity to so much of the city. The toilet seat was broken on arrival which was a shame, and despite being told check in was 3pm the cleaners weren't done til 4pm so had to wait and come back later on arrival. The apartment does also get quite hot and stuffy during the day in summer.
While we felt the listing didn't make it clear enough just how loud things will be here at night, the hosts did offer to cancel our last two nights and refund us for them, however the messages were slightly abrupt. Ultimately we were rather disappointed with our stay here, and definitely wouldn't come back. It should really be an apartment aimed for people coming to Lisbon to party til 2-3am every night. For everyone else, it likely won't be appropriate