Fagerheim Fjellstugu is located at RV7 on Hardangervidda. You can drive or take the train to Haugastøl.
In the summer you can get here by train and bus. Get in touch if you want help with transport from Haugstøl!
Bus timetables: https://www.skyss.no/globalassets/reise/rutetabellar/buss/haustruter-2021/hardanger---voss/991.pdf
Read more about the parking possibilities
here.