Check in and check out was great, Vincent was very charming and nice, and our stay was easy! The location is between 3 metro stations, and we had no issues getting to major tourist attractions. We used the washing machine after a bird pooped on me at Versaille (Vincent responded right away when we had questions on how to use it!) and there were power adapters to use which was a godsend.
There are 4 flights of stairs though, and no elevator, so be prepared!