The hostel was very nice. Everything was extremely clean. 6 showers and 6 toilets available. There is a basic kitchen with a microwave, but no cooktop. The staff is extremely friendly and always ready to help.
The only "negative" is the number of people in the room, which is a capsule-hostel-style setup. From the pictures, I believe I chose a different bed type, although they are all in the same room.
Overall, I would book it again if I had to stay in Hiroshima for 1-3 nights