[quote=@ManyThings]
Buildings, mostly. We're mobsters, but underground ones, so I suppose we have access to some sort of hideout given the police are obviously aiming to dismantle our group.
[/quote]

Indeed, there are safe houses for the characters to meet in. These include an old theater, a private church and a dockside warehouse. Their secrecy is why the police has to send undercover officers for infiltration, otherwise the cops would raid the wrong properties and get a bunch of bad rep.

The building themselves are a mixture of modern and traditional, depending which part of the city you're in. I use Italian port cities, such as Naples and Genoa, for reference.