Beautiful flat, very airy and open, great location close to one of my favourite areas of Paris, canal Saint Martin. Nearby metro took us easily to the centre in 20-30 min. Well cleaned, beds were good, would be perfect for a family. Lovely attention to detail and very stylish. Everything had been provided, we replaced a few things and used a little of others. The kitchen was great - love the induction hobs. It was possible to cook some fancy meals and very handy having the Monoprix across the street.
We were grateful that Jean Paul was able to reschedule our arrival to the next day at short notice due to our Eurostar being cancelled. And then our rescheduled train was 2 hours delayed, arriving after midnight. Despite this headache he was understanding (I made sure to update him frequently over text message). I felt that the late checkin and extra waiting fees were reasonable (as detailed), especially as he then had to get a taxi all the way home as the metro was now closed. I was glad for the required insurance as I went for the recommended ADAR and they are just about to reimburse me with the fees for the first night, which does help a lot.
All in all, a super place to stay, with accommodating hosts. Will definitely consider next time I'm in Paris.