Small, neat, clean, good location, like Switzerland itself! Simplon 10 couldn't be better located for a brief (mostly non-cooking) stay in Lausanne. Also like Switzerland, more expensive than some of its neighbors for what you get in terms of space, etc.
But even with the perpetual work going on nearby at the station, Simplon 10 is right where you want to be, very convenient for a few nights. The only suggestion I've made (and have previously for other places) is for proprietors to invest in a portable electric fan. Days - and nights - are getting hotter everywhere.