We have an Eglu with 3 hens. When we initially got them they stayed in the run until the late afternoon when they were let out and freeranged around the garden. Once winter came with the dark afternoons this then became a problem as they were not getting out at all - the run is just too small for them all of the time, the same as the one in the picture is too small and probably only suitable for one bird space wise.
We had a long chat as a family and decided that we would let the chickens free range in the garden all the time, even when we are out at work. This decision wasn't taken easily, and we are aware of the risks. But we decided that their quality of life has improved so much that it is offset against the risk of them being outside. One month in and there have been no problems yet, other than the neighbour having to put Daisy back over into our garden every now and again! I leave the greenhouse open and they go in there when it is really wet.
Each person has to make the decision that they believe is best for their hens. The only thing to be sure of is that the runs, like that stated at the beginning, is too small for more than one hen or two bantams. Companies like the one selling it, and Omlet to a certain extent get away with selling these by stating 'suitable for up to 5 hens' etc. It is only when you read the small print that you become aware of the fact that yes, the coop is suitable for that number, but the enclosed run isn't.