I will be visiting SF MOMA with a friend next weekend. I'm looking for fun places to have cocktails and places with decadent desserts to go to afterwards. I'm willing to walk up to 2 miles. The ideal thing would be to point me to the right neighborhood with lots of choices. Fun = good people watching, inventive drinks, perhaps loungey but not too snooty and not too divey, friendly staff. For desserts, I like super decadent over the top kinds.