A great, central location in Paris, and the photos are 100% representative of the apartment - it's a fantastic space with all the furnishings you could need. Check-in was great with perfect communication and plenty of flexibility, which was much appreciated as our flight was delayed coming in to Paris. There's plenty of metro stations nearby so getting around is easy too.
We'd highly recommend Norika and Guillaume's flat - with the singular caveat that you shouldn't underestimate the climb up to it, as there are around 20 steps per each of the five floors. But, as N&G point out, that is typical of an old Parisian building. Worth bearing in mind in case you have any kind of mobility issues though!
Otherwise, a lovely apartment that will be our first port of call next time we're in the city :)