Stayed for 2 nights in the female dormitory, and loved the atmosphere of the hostel! Stylish blend of modern amenities and traditional architecture. Very clean and well-kept, and really enjoyed the amount of space offered in the female dorm (4 beds and plenty of room to stretch out/for luggage). The dorm window looked straight out onto Fuji which was amazing! The room was very warm and nights were quiet, so you can get a good sleep. Fellow solo travellers were also friendly and open to socialise if you wanted. Bar and dining/cafe downstairs was convenient, especially when you don't want to brave the winter chill at night, and both were open late. Staff were friendly and reception can help you book shuttles/activities/etc. if you need them, which I did when scheduling a shuttle to an onsen nearby.
Location is about a 10 minute walk from the station; as an fyi, I'd recommend arriving at the hostel during daylight hours (when you check in) since the surrounding streets are a bit more confusing at night as it's a largely residential area that is not very well lit. Usually not much of a problem (this is where a pocket wifi device comes in handy) but if you have lots of luggage, save yourself the hassle of navigating with baggage and in the dark. Worth noting that I still felt pretty safe though.
Also very close to several convenience stores, a large drugstore, shopping centre and a 15-20 min walk from the lake! Would stay here again! :)