San Francisco visiting

I'll be in SF April 7-10, looking for a bully-friendly place to drop in and train a bit. My schedule is a little screwy, so I understand this may not happen. My ideal would be to get a morning session on 9th or 10th.

Google-fu tells me that Ralph Gracie SF might be a good option, because proximity to my hotel (Mariott Marquis) + generous schedule. I haven't called them, yet. 10th Planet also more-or-less walking distance. Short of those, anyone got any great ideas?

Rice a roni!