The Fuego Ironworks has spin tiles that allow you level up in the daycare, some of them push you back different amounts so which tile is the best to grind on?
The tile that pushes you the most is the one 7 right and 6 tiles up from the entrance. It sends you 14 tiles up and can be walked on again by just holding down so you can just be afk with the down key held and get lots of exp in the day care. There are other tiles that do the same thing though so it doesn't matter, since the amount of exp you get is the amount of tiles you walk.