I'm not sure I'd want to swim here. http://www.homesandproperty.co.uk/l...-10-storeys-high-between-two-apartment-blocks
I guess that it is an awesome idea, and very unique; but i am not sure if I would want to swim there, either ! Most likely, they are sure of its safety, or they would not have built it, and if there is danger from a bad storm or other weather issue, no one would be swimming in it. However, I still think that i prefer a swimming pool that is on or in the ground and not one "floating" in mid-air.
I would have the engineers responsible for it, be the first to try it out. Would they ice-skate on it in the Winter?