Draw a closed way around the terrain of the agritourism farm associating the following tags to it:
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:
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: