Maria is a great hostess, she was very prompt with replying e-mail and gave excellent directions to her place. The flat is in a very good location - the connections with the public transport are very close by. I think you could walk to some of the major sights in Paris should you like to. We used the metro for everything, but there are also several bus lines right next to the flat.
The flat is very nice, warm and cosy in an old charming building. We liked it a lot. The bedroom is perhaps a bit small, but plenty enough space for tired tourists - and the bed was super comfy! We had a very good rest in the flat as it is located on a very quiet street. There is a small kitchenette that we did not use, but it seemed to have all the mod cons that a traveler might need.
Maria is a wonderful person. We didn't have that much time to converse with our hostess, but the little time we had gave us an impression of a very warm and easy going person. Maria was helping us with directions, suggested places to visit, checked opening hours etc. I can very warmly recommend this accommodation and am sure that you'll just love the hostess. We are for sure booking the same flat next time in Paris!