It has switched to self check-in, and even though the hotel is under construction, the price remains the same as before.
Check-in is at 3:00 PM, and when I arrived around 2:30 PM and asked whether early check-in was possible, they rigidly insisted that I pay an additional 2,200 yen.
This is a hotel I’ve always stayed at whenever I traveled, but I don’t think I’ll be coming back again.