I had the best experience doing the Lares Trek with this agency.
It was better than expected.
The guide was really thoughtful explaining everything, taking pictures and not pushing too hard on those that were not 100% prepared for the hike.
The crew was also very competent, and the food was unbelievable considering the conditions (in the mountains in the middle of nowhere): several plates for breakfast, lunch and dinner, individually served and with a special attention to allergies.
I had no problem reaching them in advance or when I was in Cusco. The guide came to our hostel to explain everything we needed.
I recommend this to everyone.