In a word “perfect”. Location: the flat is right in the center and the closest tube (Chatelet les alles) can get you everywhere in Paris. The flat is small and but comfortable and the area around is full of good places to eat, supermarket, bar, pharmacy and everything you could need. Roth is a perfect host. The check in was perfect even if we arrived with almost an hour of delay. And he supported us with all the informations we needed on the day we left (there was a strike of all the public transportation). We will definitely go back to Roth’s place whenever we’ll be back in paris