Very clean and nice apartment in an amazing location in Bairro Alto. It's on a very quiet street just around the corner from all of the loud and busy nightlife, so it was perfect! The apartment is small so it is ideal for an individual traveling alone or a couple that doesn't need much space/ is planning to eat most meals out. The building itself is beautifully renovated and clean as well. The apartment is on the first floor which is street-level, so we kept the windows closed for privacy, so we didn't get any natural light which we didn't love but we were spending minimal time in the apartment anyway so it wasn't too important.
You can use a key app to get into the front door of the building and the apartment, and there are physical keys as well.
Would recommend!