I did the Ausangate & Vinicunca Rainbow Mountain 3 day/2 night. I couldn't recommend Andean Great Treks enough. They took care of every detail and ensured that we had an unforgettable hike. Their camp setups each night was perfect, they brought the best chef on our hike who cooked us delicious, local 3-course meals for breakfast, lunch, and dinner each day; and our guide (Cirilo) was the best guide you could ask for -- extremely knowledgeable about the terrain, customs, and people. He also made our adventure more fun and was able to take steps to help us deal with altitude sickness.
Ausangate Trek & Rainbow Mountain