"NOTE: THE BEST WAY TO WRITE THIS  "HOUSE NUMBER" is 9/A/R
= where "R" stands for "Rosso", which means "Red":
this is because FIRENZE (= Florence) is THE ONLY city in Italy where businesses were allocated RED numbers by the City's government in order to distinguish them from private homes, which carry a "Non- black" number.
Therefore, in Florence, if one invites a guest to one's office, shop or workshop, and tells him/her to come to Via John Doe [no.] 25 forgetting to specify that it is at 25/R,
chances are that  the guest gets stranded, because he/she ends up at the NON-RED house number which will likely be in a 

while"
OSM snapshot date: 2023-08-14T02:00:17Z
POI name: AZ Language Services
POI types: amenity-language_school
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