I am looking for a restaurant in Berkeley/Oakland or SF that has a private lounge or any sort of similar space. This is for a formal sit-down dinner/reception for roughly 30 people. I'd say 3-4 stars in terms of food (so places like Buca di Beppo are definitely out) and private means totally separate space, like a basement or another room with its own walls. I looked at a number of usual suspects but since this is for a Saturday night, they're either a) waaay too expensive, i.e. you have to buy out the entire (small) restaurant with some restaurants quoting figures in 5-10K range or b) the space isn't really separate, e.g. Oliveto with its glass "wall" or c) there's a minimum bar requirement. I don't mind a minimum food requirement.