Don’t know what to do in Cusco? I got you. After living in Cusco for 6 weeks, this is exactly what I would recommend for most people to do with 3 days in Cusco.
My Perú travel map also has 100+ of my personal recommendations (a huge portion are in Cusco) on food spots, adventures, and hidden gems!
https://www.ryanfila.com/perumap
Loki Hostel:
https://lokihostel.com/es/cusco