I used Dervish to rent my property. I first called into the office and a man picked up and he did not have a clue about the lettings market, gave me an astronomical figure on my property. Dervish then called me from the same office and gave me a realistic price and found me tenants really quickly . my tenants have been here for nearly a year and we have had no problems. commission was a bit higher then usual thats the only downfall.