I was in Turin for a conference. Based on reviews on this site, I booked an apartment in Res. Sacchi, which is located near the train station. For a very moderate cost, you get a large studio apartment that includes an area with a sofa and desk. My unit was on the fifth floor and was very quiet. The a/c works well. Wifi is available, as well as an ethernet connection if you prefer the security. There is a kitchen area and dishes are provided, so this place would be ideal for longer stays as well. The staff is very friendly and helpful. When I complained that the unit I was given stunk of cigarette smoke AND industrial deodorizer, I was shown all available units and allowed to choose the only I liked best (my rating applies to the second room...). There are several cafés and a small supermarket very close.