Ivan’s place is lovely — spacious, so full of light, and very centrally located. The bed was comfortable, the kitchen well-equipped (although we didn’t do more than boil water), and the large jacuzzi tub a nice bonus. The windows between the living room and bedroom really open up the space as well. It’s on the 1st floor (i.e. up one flight) so if climbing stairs is unpleasant for you this is a great find (conversely, if you’re looking for a view of the rooftops of Paris this isn’t the one for you).
Ivan communicated very quickly and thoroughly both before our arrival and during the trip, and check-in and check-out were very easy and smooth. The only drawback to the place is that the street can be noisy, with people during the day/evening and street sweepers and garbage collection in the morning, but the windows are quite effective at blocking sound when you need them to — we slept in until 10am one morning with no problem.
Overall, I was very happy here, even as someone who usually likes to stay on quieter streets further from the city center. It was really a treat to be so close to the Seine, the Marais, and the big landmarks like the Louvre and Notre Dame.