I've spent a lot of time in that square in Turin. There's a wonderful book published by Adelphi called "Lettere da Torino" that collects all of Nieztche's letters he wrote from that apartment. It's in Italian and I don't think an English version exists, although there are some translations online. If you're still in Turin you could probably find a copy from one of the booksellers on Via Po...
I've spent a lot of time in that square in Turin. There's a wonderful book published by Adelphi called "Lettere da Torino" that collects all of Nieztche's letters he wrote from that apartment. It's in Italian and I don't think an English version exists, although there are some translations online. If you're still in Turin you could probably find a copy from one of the booksellers on Via Po...