Shin's place is how I'd imagine a Ninja's house would be. It's an experience and an adventure, it's like living in a treehouse. I had a fun time climbing up and down. The rooftop boasts a very nice view of the city skyline at night.
If you have fear of heights, its quite a caution to go down from upstairs especially in the middle of the night. You'd have to be fully awake and careful making trips up and down. But it is quite a safe fun, when careful.
Although I'm not allergic to dust but given that I have a family member who is, the place can get quite dusty. Perhaps due to the wooden furnitures? If you have allergy or a reaction to dust, please do take this into consideration.
Location wise was very convenient, loads of food shops in the neighbourhood and quiet at night.
Lastly, Shin is the loveliest host that we've encountered. We really couldn't thank him enough. He has an array of guides ready for you to look through, which proved useful for us first timers to Japan.
Noted that he is also a master of tea ceremony, he indulged us and boy was that the best matcha tea I've ever had! Adding on to more, he even helped us reserve our seats on the bus back to the airport. He was quick at replying questions and always ready to help.
Truly, thank you Shin!