This flat is bright, colourful and cosy, and in an ideal location. Although being very close to metro and bus stops, it is set back from the street and on the 5th floor, so very quiet. There are lots of useful shops nearby, including some incredible vegan bakeries! It was extremely clean and well-presented. Check in was easy and the host remained contactable throughout our stay.
It's a bit small, with the bed on a raised platform in the living room so that you're quite close to the ceiling, and it's a bit tricky to get up the steps to this without banging your head! I also wouldn't recommend staying with very young children, as there are edges to this platform without barriers, which could be dangerous - the ad is a bit confusing as it says only babies under 2 are allowed, but I think this is a mistake since, upon querying it, the hosts were happy for us to stay with our older child.
The kitchen is also fairly basic, with just the one hot plate and no kettle. The coffee machine wasn't working, so we resorted to boiling water in a pan! Cooking was a bit of a challenge, but doable. The shower worked well, although it's in need of a curtain!
Overall, as a base for exploring Paris, this is a really great option.