Bella Milano Bistrot Bar is a cozy spot that's perfect for grabbing a drink. It's located in the Porta Romana neighbourhood, one of my favourite areas to go out thanks to the many interesting bars in the area, like this one. They have a nice cocktail menu that changes often, so you might always find something interesting.
The location is super small, they have a handful of indoors tables, but they have seats outside. I'd recommend it for spring/summer or definitely try to book a table if you're visiting in winter.
Prices are a bit higher than other bars in the area, cocktails range from 15 to 20+