I had a really nice stay of 4 months at Shanny's house.
Shanny was a really good host, very available and friendly. He was able to answer every single question that I had.
For those who wants to do an exchange at York University, this accommodation is very convenient and at 8/10 min by walk from the campus (from the Second Student Center) and at 12 min by walk to the subway station of York University (line 1).
My room was really comfortable and Shanny was always making sure that everything was at my disposal (towels, shampoo, hair-dryer). I was sharing the bathroom with 2 others roommates on my floor. I was sharing the living room and the kitchen with 6 other people.
I will recommend Shanny's accommodation without a doubt.