We decided on a trampoline park. There are a few in Southern Wisconsin, but the toddler jump hours at Rockin' Jump fit our schedule the best.
Needless to say, he had a blast!
The facilities have always been very clean and well-kept when we have been there. There are nice bathrooms. We did not take diapers in (chose to change in the car before and after), but I believe there were changing stations.
The other part I LOVE is the pricing. Parents do not pay to supervise their kids. That is one of my pet peeves at a lot of child-centered places - parents pay admission even though they are really only there for their children. Not here. Only the jumpers pay!
Some advice before you go: sign a waiver online so you don't have to wait to do it there, and save your jump socks so you don't have to buy more next time. Also, there is a maximum number of jumpers at any given time, so if you're going at a time that might be busy, either book a spot online or get there early.
I have never been to the one in Brown Deer, but I would assume it is very similar.
2700 Novation Parkway ~ Madison, WI ~ (608) 819-5368
9009 North Deerbrook Trail ~ Brown Deer, WI ~ (414) 522-1945
Admission: anywhere between $5-$20, depending on when you go and how long you want to be there