They are small and curious houses, I love this style of sketch.
Which makes me wonder what's inside them after it's drawn.
Or what it would be like to live here.
I think this is what attracts me most in this style.

Line and wash in my style.
This is a tutorial that is on my channel on youtube:https://www.youtube.com/channel/UChARxKHm9NvFsN52nnvpxRw

6x8 inches
sketchbook paper 300g hot press 140lb canson Heritage
and Watercolor winsor e newton