...somewhat more exactly: ...even more exactly: [pdf] ...and for friends of "Google Earth" as a kml-file.   GPS coordinates: 47° 49' 58"  North 10° 36' 56"  East

Description of way starting from the B12:

Leave the B12 at "Biessenhofen" - direction "Biessenhofen" - in the roundabout traffic departure "Altdorf" - after about one mile you are in Ebenhofen - at the crossing (baker's shop "Horn") turn right - immediately after big bridge (with blue railing) and right curve turn left - drive through 2 underpasses - at the foot of the mountain turn left - at the top turn right heading for Apfeltrang - now you can already see our farm - scarcely one mile straight ahead and you are welcome at your vacation target.
By the way: In many maps and navigational systems our yard is called "Marxbauer".