Home Farm - The Coo Shed is near Dunragit, between Stranraer and Glenluce. It used to be a farm building, but it's been completely done up inside.
It sleeps a lot of people, eighteen across eight bedrooms. There are nine bathrooms, so nobody should have to queue. The rating is 5 Star, which means it's been finished to a high standard.
The main living space is open-plan, kitchen and dining area all together. It's a big room so you can all be in there without being on top of each other. The kitchen is modern and has a dishwasher and washing machine. There's a separate games room with a pool table.
Outside there's a good-sized, enclosed garden. It has a covered seating area and a private hot tub. You can bring up to two dogs.
The stairs to the first floor are quite wide and open, more like a modern house than a cottage. Just something to be aware of if you have very young children.
You're out in the countryside here, on a working farm. Stranraer is about ten minutes away by car for shops. The coast at Loch Ryan is close. For a day out, the Galloway Forest Park is about half an hour's drive. There's local fishing and a few golf courses nearby, like Stranraer Golf Club.
If you need even more space, you can book this place together with the other properties on the farm, which sleep up to 43 in total.
Useful links for planning: Galloway Forest Park at VisitScotland and National Trust for Scotland Places.