The University of Turin is not at the top of the Italian universities, but I think it is one of the best. The organization is not so good sometimes and the students have to manage several things by themselves and this could be a problem especially for foreign students. There is a Buddy Program but it is quite small and I think great help and support can be found in the other students. Italians are very friendly and it is a good point if an exchange student needs help or wants to improve their language skills.
In my course of study (foreign languages) there was quite a high level of knowledge of both professors and students. Professors are often involved in festivals, seminars or talks, and they try to involve the students as well.
People are generally internationally friendly, since Turin has a long history as a city of tourism. This means that the language barrier will not be such an obstacle and you will always find someone who can speak at least a bit of English or French.