Worth the price”
I was planning to sleep in the car, but I ended up looking for a hotel in a hurry. At this time of year, there were a lot of professional baseball fans visiting the camps (myself included), and the prices at all of the camps were more than I expected for one night. Even including the parking fee, it was less than 10,000 yen. The building is quite old, and the interior decoration and ceiling height were as others have commented, but cost cutting was done in various areas (NHK could not be watched on the TV). If you can stay overnight without meals, if you can tolerate smoking, and if it's cheap, then this is the place for you.