Advice for overnight transit
 

I'll be arriving at ZRH at 10p on 1/1, leaving the next day (1/2) at 11:30am. I know it's a quick train trip to downtown from the airport, but is it worth reserving a room downtown for just a few hours of walking around in the morning? Will anything be open early Sunday morning?

Or does it make more sense to get something close to the airport and just sleep in a bit?