Place looks better than pictures and is in close proximity to lausanne downtown, old town and train station. There is no ac but i guess that is the norm in switzerland. Unless you happen to visit on hottest day of year i suppose it should not be a problem. There was one more thing i would like to add - we wanted to open the window but it is so close to street that it feels like you are right next to running cars ( surprisingly there was traffic past mid night during our visit) and also, the way floors are we felt anyone can easily jump from street to living room. (Altho switzerland in general is a safe country). A couple of bars or metal grid can help. We happen to be here on super hot days otherwise i doubt anyone would notice these things. Walid was a great host and he went above and beyond to help us feel comfortable. Apart from minor discomfort i described above, his house has everything one might need to enjoy vacation.