Insurance on share accommodation / multi-let / rent by room

can anyone share with me experiences around insurance companies and brokers that cover share / boarding / multi-let / by-the-room / student accommodation?

I spoke to my broker and they said that they haven't found anyone that does it. Nobody will touch it due to the high risk. I figured that just means high premiums and high excess, rather than no insurance.

I know there is lots of share accommodation out there, so people must be insuring all these properties somehow. Please share your stories.

greatly appreciated,