I cannot say enough about Axel's apartment. I've already recommended it to three friends who will be visiting Paris soon. It was quiet, clean, and steps away from the subway (the only downside was the fact that the Bastille metro stop underground right outside the apartment feels like it's several blocks long, but maybe that was just because our feet were tired). It was just a couple metro stops away from the Louvre, Notre Dame, and all the other central sites of Paris. It's also on the very edge of the Marais/Bastille neighborhoods, and the Marais was really fun to wander around and explore. It's on a very quiet, BEAUTIFUL, gated street (Axel was very thorough in showing us how to get in and lock up -- but it was all very easy). Boulangeries, restaurants, bars, Amorino gelato are all literally within steps. We also went to the outdoor market on Sunday morning just around the corner from the apartment and it was unbelievably fun.
The bed was clean and comfortable (and it was a REAL bed, NOT a couch bed which we appreciated!). The one downside was that one night we got in late and didn't have any hot water for a shower that night. Not a deal breaker for me though (there was plenty the next morning), especially since everything else about this place was incredible.
It was also very spacious for two people and our suitcases. Nothing fancy, but it was clean and well taken care of. Honestly if you're in Paris, go out and SEE PARIS. Don't hang out in your apartment. We didn't ever use the kitchen to cook, but it looked to be well stocked. There was a little fridge, a sink, dishes, a washing machine, and coffee maker. Can't remember if there was a microwave or not, but why are you microwaving things in Paris?? Go out and get a crepe!!
Axel was an amazing host and helped answer our questions about local recommendations.