Unfortunately, I don’t find the inspiration source for this machiya on my saved maps anymore (sorry! 申し 訳 ありません！). However, I’ve found some of the inspiration photos used for it, like this house or this one (both are inns located in Kyoto).
The interior is also inspired by a lot of images I’ve collected on pinterest, like this one or this one.
Here a few screenshots for the example map distributed with the pack. Notice the kamado model is exactly the one of the inspiration photo mentioned above.
Here a few screenshots from the playable demo too.