This flat, apparently rented by rentaroom.fr, was an ok selection for a week's stay in Paris. The flat is situated for North and Central Paris, including Gare du Nord/l'Est, Chatelet/Les Halle, Ile-de-Cite, and surroundings. While the rate was perhaps competitive, the interior was not spectacular. Some minor inconveniences we noted were: water squishing out from the floor boards (having leaked from the condenser, perhaps?), only having one mug amongst 4 people, and having perpetual background fan/condenser noise. The kitchen/living area wasn't dirty per se, but had a general appearance of being battered. The frosted glass panels let in decent light, but did not seem very secure. The downstairs part of the accommodation was the best, with a nice bathroom/bedroom and comfy bed. Unfortunately, we had to leave the dehumidifier running constantly to keep the basement cool and.. less humid.
While the location is great for accessing downtown, we quickly decided to avoid quiet cross streets, which featured numerous 'ladies of the night'. Sticking to the boulevards and Rues St Denis/Martin, we were provided both shops and walking access to the centre.
Finally, 'housekeeping' arrived 30mins early on check out day and entered without knocking.
Overall, the stay was perfectly adequate and meet our needs; particularly the proximity to Central Paris. That said, I wouldn't call the flat charming; nor was there much attention to detail- it was simply a decent stay.