Easy to get there over a mountain with a very good road. Plus lower altitude so you adapt to the altitude. Everyone just races to Machu Picchu that is the thing everyone wants to see. Unless someone tells them about the Sacred Valley they don’t really know. Personally I think it is a shame not to visit this area on the way to Machu Picchu.
This website covers the highlights. The salt plains are worth seeing.
https://www.classadventuretravel.com/top-5-highlights-of-the-sacred-valley/
