if you are coming to cleveland and headed 90 east genava state park is nice,, just spent the weekend,,, looks like they have 41 spots tonite
http://parks.ohiodnr.gov/geneva mostly electric they only have 4 full but showers house and dumpstation,,,,was nice place
if you go here go into geneva on the lake a very cool grand strand kinda of a time warp eddies diner
if you are coming north to to 80 (turnpike) like it was said the turnpike has hookups at plazas but
this is a nice campground outside of akron
http://parks.ohiodnr.gov/westbranch (west branch state park) lots of spots open tonite
they have full hookups
i live just outside of cleveland
http://ohiostateparks.reserveamerica.com/