I love articles like this; thinking outside the box to solve a problem. Appreciated all the different steps taken on how to bring the playhouse up to speed, as well as your honesty on any issues and how it held up. And I’m glad you showed the failed prefab as part of the journey to get to the playhouse. 

This playhouse is really small. I can’t stand in it. But I have a system to clean it out easily. I put 2 pieces of cardboard on the floor (2 unfolded wine cartons). I have a garden kneel mat I put in front of the door opening. fold the dirty cardboard to the center and pull it out. If any dirt is left behind I use a small shovel to get this out too. If the floor is clean, I add new unfolded cartons to cover the perspex floor. Add a little bedding and its ready.