Are you sure that is your mum, not mine? My dad sold his business unit at peak for £5k more than the asking price and my mum is still having a go at him for selling it, even though it would have depreciated by at least £40k by now, because "we would still have had the rent". She cannot get her head around property going down in value. If your mum still insists on buying something, forget holiday lets (I've done it and it is a huge pain, people steal, break things and spunk on your furniture). Buy the house next door, or as close as possible, where at least you can keep an eye on things and remember, when she is old you will be the one who ends up running things with all the attendant headaches and worries.