1 week in this area of Peru, Cusco is authentic but so touristy as well. I spent 8 days in Cusco including 1 night in Aguas calientes ( Machu Picchu pueblo ). the city is kind of small but great atmosphere , full or restaurants, hostels, bars, tourism office. from cusco I was able to purchase a ticket for 130 soles that give you access to lot of activities and excursion. one excursion is around 70 soles so its worth it as you have 14 different entries. Around Cusco , you can enjoy lot of activities, of course the legendary Machu Picchu but also Palcoyo mountain ( worth it 200% ), Saqsayhuman ( sexywoman), Pisac, Ollantaytambo... Machu picchu is just Wow, breathtaking view and what a feeling when you are front of, you can feel the energy.. Inca protect Machu Picchu to hide their Inca trail that lead to Machu Picchu but start in Ollantaytambo.. Spanish were thinking it was only a huge forest but actually didn't see the trail...
I stayed in hostel called Kokopelli hostel, comfy, great staff, great food, party, good location
next direction Puno & first city in Bolivia , Copacabana...