This apartment in Bairro Alto is a hidden gem. It's precisely what a young group of friends would hope for. It lends itself to the nightlife well and is spacious enough. The highlight has to be the balcony, which we spent many great nights on.
It also allows you to be highly sociable if there are likeminded/similarly aged people in the other apartments.
I would recommend this apartment with the caveat that if you don't like staying up late this probably isn't for you. However, if you wish to engage in a vibrant nightlife this is the place for you.