oh duh, I just realized there are maps on the hotel website. The dogpark is in Riverbend Park on the east of Findlay out by the Resevoirs. Findlay's pretty easy to navigate, no matter where you stay.

If you are coming in a camper, this is the closest campground:

Shadylake Campground
419-423-3490

It costs 22.50 per night, they have water & electricity.

They're just north of Findlay by the Whirlpool plant, it's very easy to get from there to the dogpark by the back roads, I can give you directions if you decide to RV it and stay there.