This is not a full-service hotel.
There are no staff available till the check-in time. It means if you want to leave the luggage, it is possible, but they would be unattended.
Japan is safe, but still, it is not the best procedure.
The room is large enough to accommodate opening up several suitcases and bags.
The bathroom was clean, but there was some dust on the vanity shelf that had not been cleaned up enough.
The location is okay; if you have many items to carry, calling a taxi is recommended for checking in and out.