I have 2, both neutered to prevent unwanted babies. I have a barn with 4 stables in, a further 2 blocks of 2 stables and a hay barn. They each have a food bowl split into two (the double bowls) which gets filled with biscuits on one side and once a day they get a packet of felix meat. It's not enough to fill them, but it's enough to keep them coming home in the evening for the most. They're brilliant hunters.
They don't get water provided - we have water troughs, a pond and half an old wooden barrel with water in they can drink from, which they always preferred over their water bowl. They don't have anywhere particularly safe as such to hide like yours will have, but it sounds lovely.