Thanks @Sirena and @Cazzita. Sister in law (brilliant negotiator, it's basically what she does for a living) is on the case of trying to sort out what the people trying to rent out the flat actually want. I still have some reservations, and I know mum will too, but I think this is by far the best step forward. Having spent so much time on TP it was interesting popping into the care home next door to the flats we were looking at. Although not part of the same company you can have lunch there. From a brief look it seemed fine, certainly no smell of wee. I certainly now know more about what to look for if we do have to start looking at care home.