Don't think you're going to find anything right down town. However, Dakota Ridge RV park seems to be popular because it's nice and it's close to hiway 6 (6th Ave) - an expressway to downtown - about 10 miles away, ditto for Bear Creek Lake Park, run by the City of Lakewood. Cherry Creek and Chatfield are Corps of Engineers type state parks. a little further out but real nice is Golden Gate Canyon State Park. Should be able to find a suitable place, good luck!!