Zack is a great host, quick to message you back with any questions you have, he is informative and a pleasure to hang out with..
Local transportation from Colma Street train station is easy, just a short 10 min walk from Zacks place and you can get pretty much anywhere you need to.
My roommates were very quiet which was a nice change compared to other places I've been to.
Guests have access to Wi-Fi, cable TV, Netflix and Amazon Fire TV.
I highly recommend Zach as a host.