I did with all of mine, but with my first they would take him to the nursery nearly every night anyway, but during the day if I needed a sleep he slept with me. With Alister I co slept with him 100% of the time we were in there (5 days). I would get the odd cheeky *tsk tsk* and a grin from the midwives, but they were cool about it, just said something along the lines of "you know we aren't suppose to let you do that, but you know what you're doing by now"

I can understand the safety thing and hospital policy though because of the tiny chance that something did happen, like a baby falling off the bed etc and then the parents suing because no one told them not to kwim? (and it would happen too) but I think most people are sensible enough that when they do do it, they make sure the side of the bed is up or they have a pillow behind bubs etc.