Thank you for playing! I’m happy you’ve enjoyed the game!
Thank you for reporting the issue with the MAP button. It was possible to return to the level by selecting its location again and pressing the Continue button. But now it seems there is a bug in it. 
As for the houses, we consider having hints over houses or maybe additional popovers to indicate which house belongs to which character. However, for hedgehogs specifically, it doesn’t matter. The mechanics of these characters allow them to exchange houses. The rule is that there must be one hedgehog in one hedgehog house by the end of the day.