In case it helps: I work here on a monthly "cafe plan" for $325/mo, which means I can take any available seat in an open "cafe" area. A dedicated desk is $525/mo. Full pricing for this location is here:
http://nextspace.us/nextspace-potrero-hill/
Daycare costs extra, but unfortunately I don't know how much (I don't use the daycare facility), and it doesn't seem to be on their website either. My guess though is that it'd be comparable to other daycare places in SF, so basically another $1000-$1500/mo?