Golan Vivaldi's place is not much to look at. He lives in "Little Mahakam", right next door to Kalkstein. He does, however, provide a place for Zoltan to hang out most days in Chapter II, and a safe haven for Yaevinn, whenever he is in town. He does not have much since the bankruptcy and takeover at the bank, but he still has a few valuables, like his books.
Vivaldi is also quite hospitable, allowing Geralt to stop and meditate there any time he is in residence.