Nice stay that has what you need for a good price.
But a couple of things to be aware of: there are not many outlets (only really one usable one, although there is an outlet splitter so you can plug multiple things in), the wi-fi is a bit spotty, the shower does not drain so well, the shower water is a bit painful, and the hot water system is based on a gas fire that requires the fan ventilation to be on during use. Also, please be aware that the air conditioner remote and laundry machine are all in japanese. Using translation apps does work well to translate them though.
Some positives - the toilet seat has a warming function, the linens were clean, and the space was designed efficiently.
The host is kind, helpful, and responsive. I’d recommend this as a well priced, private stay in Asakusa.