We stayed at Katrins house with our 2 small children. Our 3 year old daughter loved Sophies room with all the toys and books etc. The children loved playing in the garden. Of course you have to stay with the children because there is no direct access between garden and apartment (which is on the first floor, up the stairs).
The apartment is very bright and beautifully decorated. Everything is present : from nice china, towels, books, …
We enjoyed the view and the atmosphere. We bathed in the river Adda, but there's quite a current, so you have to be prepared for that. We did quite some excursions: we went to lake Como, the Iseo lake, the cities of Como, Monza and Bergamo. We liked the region very much. Our children loved the cats and the chicken on the land surrounding the mill. It is perfect for a quiet, peaceful stay in a wonderful environment.