or this one: https://goo.gl/maps/D1Y8B8YWgULXxoBi7

This is how you get to Casa Olmeto:

Take exit Pantalla/Collazzone from E45/SS3bis which connects Perugia and Terni.

Turn right onto SP421. Follow for 750m.

Turn right onto Vacobolo Borghetto/SP384. Follow for 3.3km.

Turn left onto Strada Comunale del Poggio. Follow for 1.3km.

You will pass the fence to the left, and then turn left down 65 m towards the entry gate.

Below you see the location/directions on the Google maps: