Aznag was great host! Communication with him was always very well in every aspect. He was kindly welcoming me as well as gave me lots of helps!
His apartment itself was also very nice. It basically consists of 2 private rooms, bathrooms and shared kitchen, living room and balcony. It is clean and nice. Also everything is equipped.
Approximately, it is 2km far form EPFL which is where I have visited in this time and 5km far from the center of Lausanne. However, the station is almost right next to the apartment so that I could move to other places very quickly and easily!