We stayed at Yankel's apartment for two nights. We spent most of the time outside and came home to sleep. It's very well located, many metro and bus stops in the area. Walking distance to opera and many other attractions (max 30mins to notre dam by walk, the same to monmartre).
We didn't cook but there was everything needed for cooking in the apartment. Bathroom was clean and looked quite new. We had hand luggage only, so there was no problem with climbing the stairs.
There was a construction behind the windows,so we kept curtains closed to not see the workers in the morning :)
Good communication with Yankel, easy check-in, check-out process.
The whole apartment is fresh and cozy, perfect for two people. We enjoyed our stay and would come again. Very recommended!