The location is perfect no matter you take Shinkansen or airport limo, fully connected with covered and barrier-free walkway. Many convenient store nearby and you can get to Hiroshima Tram station (which can take you to all the city landmarks) in 5 mins walk.
The room is nice and spacious, with all necessary facility and daily bottle water. The bed is good and comfortable, with nice chair and table. The toilet/shower is also excellent.
Check-in is fast and efficient, and you can use the automatic check-out.