Yes, on top of the cliff is the perfect place to put Rouletout. Just 50m away you get fresh water and 2km away you will find a small village where you get basic supplies, about 20km away is the city Valjevo where you will find everything you need. Not to forget the nice neighbours that bring you the world famous Rakije, fresh raspberries, kaymak (a delicious mik product), cheese or just invite you for dinner. Most of the climbs are nice, grades are rather on the hard side and you can climb perfectly well even under heavy rain - yes we tested it - but you shouldn't sleep too long when it is too hot! If you are lucky some local climbers show up, give you perfect hints and make your stay in Grdoba even more enjoyable.
Check out this link for more info on climbing in Grdoba and Serbia in general