When I go to the office, my productivity really drops. I am reminded why I hate working full time in the office. Still, it's worth it for team dinners and other "team building" activities. I joke that the thing we get out of going to the office is to socialize.
I like the setup, though. When I do go, I'm basically doing a working vacation. We whiteboard, work on things I wouldn't normally do, have fun, and usually get something accomplished once I settle in.