Interested in others' opinions on this one. The management in my block explicitly prohibit airbnb rentals. I was pretty sure that the flat opposite mine was being used like this and I did a little sleuthing and found it on the site. Normally, I might decide that it's none of my business (the guests have not been disruptive) except that the owners deliberately turfed out the lovely woman who lived there with her family, causing her a lot of financial and other stress, so that they could make way more money than with a regular tenancy. Should I tell the management company? I think my motives maybe are a bit vengeful (and obviously it's too late for my lovely ex-neighbour) and I probably won't do anything, but what does everyone think?