Skinny House: urban alchemist's eccentric home

Need a tall, skinny home to fit between two bigger homes in your city?

This build was inspired by a YouTube video* about an architect's home built in the alley between two big Victorian houses. It had a neat floor plan and seemed quirky enough to be the abode of an eccentric alchemist wizard.

From the base level up, it features: a large underground bathing room, an entrance hall and a dining room, a kitchen, a bedroom and small bathroom, an office/alchemy workshop, an attic, and the space for a rooftop garden or telescope.

As it was built to have as compact of a width as I could make it, it is more a design piece than a great place for an adventure (combat will be tiiiiiiiight! It's only 4 tiles wide!), but I figured it may tickle someone else's funny bone.

*"Fascinating ULTRA Narrow House with Multi-Level Maze of Rooms - FULL TOUR" by Exploring Alternatives on youtube, if you want to see my original inspiration. https://www.youtube.com/watch?v=klPfMQR-ohQ