Bansko,

We spent 2 quiet nights here - parking is busy with walkers during the day but empty at night. Great hiking trails around too

A great spacious place in the woods. There's a path starting from here, so some people came in the morning, but not many (in October). There was no water when we were here either. Worth noting that Google Maps shows a campsite a bit further up the road, but it did not exist when we went looking for it (and it was very difficult to reverse once you got to the side road which should lead to it).