The location is pretty good, right off Line 1 (Chuden-mae stop) from Hiroshima train station. Other tram (#3 and #7) also stop there, along with a bunch of different buses. It is walking distance (~1km) to busy downtown area and to the popular atomic museum.
The hotel is visibly old, but my room was very clean. It was a little cold during my visit late march. There is AC, but no heat. There is convenient self-serve laundry facility. Staff is friendly. Breakfast was ok (lots of hot and cold items, including eggs and meats).
The only thing to be careful of is that there is another Comfort Inn about 3 blocks south, about 50m closer to the tram stop than this one in the opposite direction. (I made this apparently common mistake)