Apartament is very well located. Neibourhood is busy enough so You will find shopping and food nearby , but quiet enough not to disturb Your good night sleep.
Metro station is 3 minutes away , and even larger station (Gare de Lyon) - with multiple transport options - is 10 minutes walking. You are well placed to target all important attractions.
The host is very friendly, all the questions I had before arrival were basically answered straight away.
Apartament itself is OK. It has what You expect of the płace to sleep. Kitchen is very well equipped, with cooking oven, kettle, microvawe, toster and even coffe machine. Apartament has a child bed - if You are travelling with a baby <2 years, and afraid that it might fall of the sofa - this might be a płace for You.
4th Floor without elevator might be a challenge, but afterall it is not a big deal.