I really can't do much better than Marissa B's review.
We normally go to Token Creek but like to switch it up and have our shiba inu group meet-ups in different dog parks. Middleton is now in our rotation!
I love it if they added a few more benches along the walking route. I'm disabled so I need frequent breaks. Speaking of which, the parking lot is right next to the entrance, unlike at Token Creek, so that's very nice.
There is always water at the front and plenty of spare tennis balls. It seems like owners really enjoy this park and everyone has been very friendly so far.
Again, I highly recommend reading the other, more thorough, review. I couldn't really say it better!