I recall that brouhaha. But the Custodian had a “friend” stashed in a W55th st co-op. Used to see him departing at first light once or twice a week when I walked the dog. He had the sneaky departure down pat. Head down, 7 or 8 steps to the open car door and he was gone in less than a half minute..
I believe Ed Koch also lived in Gracie Mansion but kept his Village apartment. Kaiser Wilhelm is a disaster. He is now wrecking the famous Bronx Science school - which sent kids from there to MIT. He has taken away the difficult admission tests so it will be more “inclusive.” Dumber, of course.