Torino offers a variety of nice and comfortable hotels, B&B and apartments.
Some examples of three-star hotels, close to the workshop venue, are:
Hotel Amadeus
Website: http://www.hotelamadeustorino.com/en/
Distance from workshop venue: ~ 500 m
Le Petit Hotel
Website: https://www.lepetithotel.it/en/
Distance from workshop venue: ~ 600 m
Best Quality Hotel Gran Mogol
Website: https://granmogol.bqhotel.it/en/
Distance from workshop venue: ~ 700 m
Hotel Roma e Rocca Cavour
Website: www.romarocca.it/index.cfm/en/
Distance from workshop venue: ~ 800 m
Hotel Alpi Resort
Website: http://hotelalpiresort.it/?lang=en
Distance from workshop venue: ~ 900 m
Other solutions can be found using online tools like