Nepal Sanctuary Treks organized a guide and porters (and permits, transportation etc) for an 11-day trek into the Langtang Valley for our family (two parents, two teenagers). We had previously used Tulsi and his company on two other trips to Nepal. Fantastic as per past experiences. They care for their staff, have a genuine commitment to the places and people that you visit and walk the talk in terms of a responsible future of tourism in Nepal. Can’t rate highly enough.