Mayrhofen is a Tyrolean resort town at the upper end of the Zillertal, where the valley narrows and the mountains start to feel close on every side. It is best known as a ski base, but it is not only a winter place: the same lifts feed summer hiking, mountain biking, paragliding, and easy high-country views.
The town sits between two mountain systems. Penken is the big, connected ski and activity side, with access toward Finkenberg, Rastkogel, and Eggalm. Ahorn is simpler and more scenic, rising above the south end of town with broad views and gentler slopes. Add the Zillertalbahn, the Hintertux Glacier, and a useful pool-and-sauna complex, and Mayrhofen has enough substance for more than a resort-strip page.
In season it can feel very packaged, with ski schools, rental shops, weekly lodging cycles, and plenty of visitors from abroad. That is the trade-off. The upside is easy logistics: arrive by train, walk around town, and use lifts and buses to reach a lot of mountain terrain without a car.