The appartment of Adriaan is small but you have all you need in there. It is very clean and quit, even if you sleep with an opend window. A 2 minute walk is needed to be at Place de la Républic from where you can get everywhere. It is a beautiful place where people are dancing and singing, absolut lovely. Next to the house there is a market and within 1-2 minutes you are able to breakfast in a bakery/coffee shop or take dinner in a restaurant.
The communication with Adriaan worked perfect, she answered/called always only a few minutes later.
I would definitly recommend the appartment because it is perfectly placed, you have all you need and Adiraan is very accomodating! But you should be fit to take the stairs to the 6th floor :)