We knew about them by a girl from Yerevan sitting next to us in our plane. We did 3 day tours, which were great to see many different parts of the country. Naira, who attend us at the office, was so nice. The guides were really nice too and the tours were well organized.
Then we took a private tour during 4 days through the Artsakh Republic with a driver, Varanc, who was not just a driver but a friend. He took us to really nice places, got everything under control, and was and amazing driver. Totally recommended!