Yankel's apartment is indeed in the center of the city and located 2 minutes away from the metro, supermarket, and life generally. The apartment is as seen in the photos: a bit small but cozy and quiet and was enough for me and my mom ( we didn't mind sharing the bed, that had a comfy mattress). Yankel himself was a very kind host and handled us being robbed and losing his key with grace - he texted us the nearest location of a police station and explained where we can get the spare key to the apartment. Our only issue with the apartment was the water pressure in the shower that at some point became just drops and the inexplicably hard to regulate water temperature. That aside I recommend bringing your own shower gel and toilette paper as we found the amount there had not been enough for 2 people staying for a week. also be aware that this is a typical Parisian building with no elevator so those of you that are less in shape might want to skip this option.