It’s definitely cozy. My family members are all short, so no problem, but my buddy’s family are all well over 6 feet tall. If you’re used to AC, you might have a hard time sleeping, as we all did. They only have a small, portable unit in the basement.
It’s well located and reasonably priced.
Outside of the accommodations, do not let anyone “help” you buy Metro passes unless you’re absolutely sure they are official representatives. We got ripped off AND later, fined, for not having valid passes. (Our incident happened specifically at the Metro station at Gare de L’Est.)