It entirely depends on what you're looking for. I'm of the mindset that it matters not where you go nor what you do. It's just about spending time together. That's what's important. That said, I recently went back to Five Crowns in C.D.M. for dinner and enjoyed it. Try to get there while it's still light out so you and your friends can take some pics with the red telephone box. For an earlier get together, maybe on the weekend, I hear The Tea House on Los Rios is fun down in S.J.C. There are several nearby places on Los Rios to visit as well. These options are more for a "ladies who lunch" crowd, which is what I happen to enjoy. However, if you're 21 and just want to have a drink or three and let confrontational men join your group, then other choices may be better suited to you.