Absolutely wonderful location- very close to the metro. Supermarket right down the street, bakery close by. It is near a major street with many restaurants and shops.
Bed was comfortable but we found the pillows to be more decorative than comfortable for sleeping which is the only thing I would change. Availability of air conditioning a bonus. It is on street level but noise was not an issue as it is a quiet street. It is small but if you plan on being out and about in Paris this is not an issue. It was comfortable for 2 people. Host was very helpful in giving us instructions to the flat on the metro as soon as we arrived (a straight shot on the 5 from Garr du Nord) It was very clean and the water pressure in the shower was very good.