My family of 4 stayed at Tommaso and Alessandra's place in San Salvario for 3 months, while I taught at Politecnico di Torino. It was the perfect home base for an easy commute to Polito's main campus and a short walk to Castello del Valentino, where I was teaching. San Salvario has many great restaurants. The neighborhood can get lively/noisy at night, but the apartment is located on a quiet block with no restaurants, across from a church. The walk to Porta Nuova train station takes about 12 minutes, even with little kids, which was handy for our weekend trips to other cities.
The 3 bedroom / 2 bathroom apartment worked great for our family of 4 - one more bedroom and one more bathroom than we have in California. The apartment has everything you need for cooking and cleaning during a longer stay. Tommaso was very responsive when we had any questions, and gave us great recommendations for restaurants and gelato. We will stay here again if we have the chance to return to Torino!