I and two other ladies did this 1 week hike last week. The trek itself was really excellent, not difficult at all, though there are a few steep climbs. The scenery was spectacular, and having strawberries, currents, raspberries growing on the roadside to eat was wonderful.
Traventuria does a 'first class plus' job of organising the trip, with being met and the airport, organising DBB accom, baggage carrying, maps etc. All their drivers arrived early and were happy to accommodate our needs, and our hosts at the accom were so friendly.
Also we had a few problems that meant many last minute changes, Traventuria's manager Ivailo was always happy to accommodate, and all correspondence with him was very efficient.