A bit of everything. It's the kind of neighbourhood that attracts a bit of the "airbnb crowd", especially on weekends. There are also some old ladies, a few young couples and the occasional student.
Without getting too poetic? You fall in love with how some streets of Bica look exactly like a postcard of Lisbon 150 years ago.
Rua da Bica de Duarte Belo, known simply as Bica, is its own point of interest. During the day, when it attracts curious tourists, and during the night, when students and locals come for a drink.
Very, very typical. The lifestyle in Lisbon doesn't get more typical than living in Bica. All the buildings are hundreds of years old (though most apartments have been recently restored).