the station of Perugia-Fontivegge you can reach the historic center with the MINIMETRO (terminus Pincetto) or take any bus to Piazza Italia.
Once in the center, find the main square (Piazza IV Novembre), cross it and walk to Piazza Piccinino that you enter in Via Bontempi, we are at number 13
By car: the E45 is advisable to leave Prepo and follow the signs to the center to the toll of ZTL, then park and walk to Piazza IV Novembre (then see directions above). The parking in the Old Town are paid, the ones closest to our hostel are P. Or P. Partigiani market.
A comfortable and convenient solution might be to use the free parking near the stations of MINIMETRO and continue this up in the center. The frequency of passing trains is 3 'or so, the cost is 1 euro