terrible here. Most of them know the location relatively well.
The settings is my grandmother's home, a three stories house with a large garden, in a village in the south of France (Aveyron to be precise).   
The house is full of old/interesting furniture (grandfather clock, massive 60's TV set, fireplace, bookshelves filled with history or decorative books, a gross stuffed owl, a collection of Murano glass fishes, my uncles and aunts' things from when they were teenagers, wardrobes with mirrors, etc.).     
It has an attic, a cellar, two kitchens, two bathrooms, a corridor that used to be a bathroom, six bedrooms, an office, what was a store ten years ago (now a TV room but still has a shop-window overlooking the street anda one-way mirror allowing people in the kitchen to see what's going on inside), a dinning room, a sewing room, a garage, a room used only when killing rabbits and making preserves and my grandfather's workshops (which we won't use since they're full of scrap metal parts and rusty cars).
The garden has a willow tree, chestnut trees, hedges, rabbits cages in a corner, a small stone table and lots of good hiding spots, but not many flowers. There's also a vegetable garden two streets away.
The village itself is not very interesting, there's a church (old and always open), a small market place, a few shops, and that's it.
Most of the clues should be in the house and garden, but since there's not many cars, and the kids are