Karl and Marcel were good hosts, and very responsive to messages. I arrived mid-heatwave and Karl was very quick to arrange a fan to make the heat a lot more bearable!
It’s a small apartment, but the location (near the Gare de l’Est and Metro) is excellent. I didn’t spend much time there as I was out and about a lot, but it was easy to get back to at the end of a long day of tourism.