Dom Vivaldiego is not much to look at. He lives in dzielnica nieludzi, right next door to Kalkstein. He does, however, provide a place for Zoltan to hang out most days in Act II, and a safe haven for Yaevinn, whenever he's in town. He doesn't have much since the bankruptcy and takeover at the Bank Vivaldich, but he still has a few valuables, like his books.
Vivaldi is also quite hospitable, allowing Geralt to stop and medytować there anytime he is in residence.