My girlfriend and I booked the self-guided tour in the Rhodopes and it proved to be a great experience, thanks to the quality of the services provided by Traventuria.
_ Booking: We booked via bulgariawalking.com and communication with the agency was very easy, they answered our emails quickly. They were also very flexible with the organization, as we requested/were offered some additional transfers.
_ Walking: The information and the maps provided were very accurate and up to date, and with a minimum of common sense it was not difficult to find our way. We were quite impressed.
The timing of the hikes is also very sound, as we always managed to arrive by mid/late afternoon, even when there were transfers and/or visits during the day.
_ Accomodation was excellent as well, they did a good job finding such good hotels and guest houses in the remote locations
In conclusion we highly recommend these guys!