With only 1 night stay in Hiroshima, this was our "luxury" stay of the whole trip. Without the time constraints we would have liked to stay longer.
Bit of an excursion to get out there by bus (take No.21 bus from the JR station, but make sure it ends at the hotel - some services terminate at the Port terminal - just ask) Were told that check in wasn't til later in the afternoon but we fronted up anyway and were able to get our luggage looked after.
Return bus trip to the Atomic site and the Peace Memorial where we spent the whole afternoon. The day we were there it was just continually raining (3/7/14). Later in the day returned to hotel via bus & taxi and a late check-in. Settled into our rooms and went down for dinner at the Buffet Restaurant - a bit $$$$$ so make sure you fill your plate a few times.
Next morning, availed ourselves of the free shuttle bus back to JR Hiroshima (first one at 7.45am) to catch the Shinkansen back up to Tokyo.
All in all a very nice hotel, only hampered by its distance from the centre of the city.