On June 11th, my boyfriend and I did the trip to Nis. Our guide was Nadia. It was an amazing trip. Nadia speaks English fluently and had a lot of stories. She was also very interrested in our lives. After a 2h20 min drive we arrived in Nis and in 2-3 hours we have managed to see all the highlights. After a great Serbian lunch, it was time to get back to Sofia. It was a great experience and I am definitely going to visit Serbia another time. Would recommend this tour.