Our stay in the appartments was excellent.. the location is great only a stones throw from Notre dame where you can catch the hop on hop off bus, the metro, and right in the Latin quarter surrounded by great restaurants. There are a lot of narrow stairs as mentioned.. and luckily I had my dad with me because I would have struggled to get my suitcase back down. And the hot water system is in the cupboard of the bedroom which makes it quite warm at night.. however not hot enough to need to use the air conditioner. I would recommend this place again and will definitely stay here again in the future.