I lived there during the academic year of 2013-2014 (in both Iris Brook and Orchard Lisle), and we were probably the second batch of people who lived there, so the buildings and facilities were still fairly new back then.
Crime - people were fatally stabbed in the pubs on Borough Street during my time there. But me and my friend would come back home from parties at 2am (we are both fairly petite women) and we had no trouble. I would actually pop over to the ATM at ungodly times like 4 or 5am to withdraw money or check my bank balance, and never felt unsafe. However this was 6 years ago so I'm not sure what the situation is like now. There was a mortuary right next door to IB and I would see bodies being carted to and fro all the time. The noise levels there were unbearable, and the courtyard was renovated during our time there as well, which caused massive amounts of disruption. The management there was ridiculously unpleasant and a pain to deal with (they were administered by Collegiate at the time). After the end of the year, me and my flatmates were all glad to move out - several had already moved out early on in the year, unable to deal with the BS going on there.
Not sure if that answers your question - I popped over to studentcrowd to read the reviews there and honestly am not surprised that it's turned into such a mess. I remember thinking back then that the one thing OLIB had going for it was that it was fairly new at the time, but after 6 years I shudder to think what it's turned into.