Although the hotel is new and clean, the check in is at 4pm, and the only way you can even enter the building is by calling a number, which is terrible if you have a data-only SIM. Luckily, the grandma at the futon store next door was super kind and the old couple helped me to make a call and get through. The system needs to be changed, because I wanted to leave my luggage early to travel around, as most places in Japan close by 5pm.