They have a Medical Concierge service you can contact to get information about lodging, transportation, liesure activities for out of towners, etc. They can probably get cookies, too. There is actually a really good bakery/restaurant in the Crile Buidling (Bldg. A), I believe its a Panini's. Tons of bakery goods there. Its also not far from Murray Hill - the Italian neighborhood, I'm sure you can finds some great bakery goods there, too.
http://cms.clevelandclinic.org/body.cfm?id=141They also have a guest house, plus links to other lodging information; and a travel agency, too
http://cms.clevelandclinic.org/body.cfm?id=142Its a big campus, more like a little city, but it has lots of shuttle services and those little golf carts inside that ferry you around to different buildings.