It seems very nice and very private which hopefully keeps some of the super weird crazies and paparazzi from bothering him.
I'm glad he is changing venues. It is pretty common knowledge that old places and old people are probably the most common triggers to relapse. So I think this is a step on that path forward for him, this is a good change.
eta a p.s., if you happen across the address (or aerial pics or google map links) of this new house, please do zac a favor and don't spread the info around. it will probably become pretty common knowledge eventually, but think of the look of disappointment zac would bestow upon you if he knew you were the one to publicize it. js.