My original room smelled of smoke despite me ordering a non-smoking room, but after bringing it up at the deskfront they easily switched my room and helped transport my luggage. Didnt try the onsen but i heard its good. My stay was short and i have tattoos whoch they dont allow, so i didnt bother trying.
I wish id had a bathtub in my hotel room as well as a microwave in there, but i could easily access a microwave down the hall from my room, so i didnt really have any issues. Like my title mention, this hotel is great for long stays, but not really for short like mine. However, the location is great, makes it easy to travel, which is why i booked this hotel as my last in japan