Is there a place to feed the group of ~15-20 people for Shabbos in the Old City (Prepaid Seudot for both Fri night and Shabbos day or just Shabbos Day)?
I don't know if the rent it, but Aish H'Torah has a hall pretty much at the top of the stairs leading down to the kotel right next to the pizza or bagel place. I hope this helps.