Agritourism
From OpenStreetMap Wiki
It has been proposed[1] to tag agritourism farms (in Italy) in the way described below.
Draw a closed way around the terrain of the agritourism farm associating the following tags to it:
landuse=farmyard agritourism=yes
If possible, draw every individual building of the farm and tag them with building=yes, or more appropriately with building=barn, building=granary, etc.
The following tags should be added to the building that offers the restaurant services:
amenity=restaurant cuisine=*
If it's not possible to draw the outlines of a building one can use a single node instead. In the same manner the building that accomodates the guests can be indicated with:
tourism=guest_house