We stayed here while visiting Hiroshima and Miyajima on our vacation to Japan for one night.
Hotel Flex is definitely a business hotel, but it was the one with the smallest double room we stayed in our entire trip. We stayed in a riverside view room, which was quite nice. We had wished for Internet in the room, but was only to use a terminal in the lobby.
The location is definitely not central, but it's within walking distance of being central to the busy shopping/restaurant areas of town. It's about 1 km walk to the Peace Park, which isn't bad at all; and is really close to the street car which also takes you out there. It's also very close to the train station -- about a 5 min walk.
The price was definitely it's best selling point -- very affordable. And you can book through an English language web site.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.