Looking for restaurant recommendations that are open on a Sunday night (7:30 PM), mid-to-upscale for ~9 people in San Francisco (ideally downtown-ish area). Some of the places I've found that look great aren't open on Sundays!

I’m on Vendry going through a ton of restaurants in SF - while I’m doing it maybe someone can recommend a recent experience with a private room or secluded area for a 10-12 people dinner? Business but intimate and friendly, not too posh. budget $3500 (realistic for SF?).