Yvain's apt. is a cute studio where my daughter and I immediately felt at home. Super well located near Hôtel de Ville and Châtelet in a small alley. Everything was perfect- the linen were clean, enough towels, hot water, heating, a small kitchen with utensils. There's an elevator , it's quiet despite its central location, Franprix supermarket is just in the parallel street and the Brioche Dorée should you wish to buy croissants for breakfast.
Yvain is a wonderful host, always super responsive and that helped a lot when I thought I had lost the apt. key (in the end I hadn't but there were some stressful moments. I contacted him, he was super laid back and calmed me down. Luckily he solved the problem as his friend had a spare key. After picking it up from her, I found the key in the end, but the way he dealt with it was impeccable). Yvain knew I was coming with my daughter and spoiled her with a variety of corn flakes and me with sparkling wine and a cake. Highly recommended!