We loved staying here, the location is perfect as its very close to the centre and some really nice bars and cafés. The appartment is small but has everything you need.
However, the appartment is not in a quiet residential area, but on a main square with lots of bars and restaurants. The noise wasn't a problem for us as we arrived on a Sunday night and most places seemed to close around midnight, but if youre a light sleeper you may want to bring some earplugs. Also, the airconditioning unit only works with the window open which kinda defeats the object.
The self check in was super easy and Vasco let us check in early which was great!
Can also recommend having a sandwich at cafe Guedes at the main square and coffee at the combi cafe round the corner.