These criteria regarding benefits status sound a bit weird to me. Can you explain further why? Accommodation which has stipulations about who can use it like this is usually social housing.
Working less than 16 hours a week indicates either jobseekers or ESA, both of which have an earnings limit. The only way a provider would meet this criteria is if she wasn't declaring her income. UC doesn't have minimum hours or earnings limits but would still be affected by declaring income from providing.