Peru is beautiful. I still have vivid memories of puffy white clouds in a gorgeous sky, and vibrant green vegetation, even at higher elevations.

If you get a chance & you're comfortable riding a horse, you really should go horseback riding in Cuzco. It is a wonderful opportunity to get out of the city & see some of the more rural parts of town. I arranged the ride through the Hostal Loreto. I don't remember the exact price, but I think it was $15 USD for 4 hours or so, including a guide. There were just 3 people in our group, including the guide. The ride started outside of town, wound through the hills & culminated at Sacsayhuáman.