Just get one made for babies like http://www.amazon.com/gp/product/B00CWN8IK2/ref=oh_details_o01_s00_i00?ie=UTF8&psc=1. I got one of those a few weeks ago and I'm happy with it in my bedroom. It's nearly silent and puts out a shit ton of mist. Honestly what the hell can your building manager say about it?