Our stay at Maison François-Denis was okay.
Honestly, it was stressful at first since we reserved parking and it was not available when we arrived. Auriel helped to come up with a temporary solution. But parking on Saint-Denis overnight, until the spot would came available the next day, was more stressful than going to a garage since we had to move the car at 6am. So we ended up in a garage the entire visit. Also, our code did not work when we arrived so had to get that resolved.
Besides that the place was nice, clean, easy in and out, bustling location. Auriel was available when we did call him with our problem(s).
I would just advise to take more care when things go wrong for your guests. Make sure to give them viable solutions that minimizes the stress that your mistake created for them.