This drawing of John's house (I guess, because of the willows...) arrived a bit battered, also by the rain (snow?) and the customs agents. I think they opened the letter and were really surprised to find... two smurfs inside! :D
A different house on one of the stamps: the Felin Cochwillan Mill (Gwynedd). It belongs to the set Windmills and Watermills, issued on 20 June 2017.