Heading toward Maine, we stopped at this KOA (listed below) because we wanted to swim in the pool with Pey before we dropped him off. We spent most of the day at Cuyahoga, and had a GREAT time with him, and he was excited to see and experience new things. This was a gorgeous location with a lot of nature trails and beauty. We would definitely recommend this for a visit.
Details: Streetsboro/Cleveland KOA; Streetsboro OH.
* Note: This campground was a bit tight, but there were several locations on the far side of the park that had decent lots.