Location: convenient, safe - even for a solo (female) traveler - , quiet room for sleeping and close to food/metro/etc. Somewhat spacious room, especially for an apartment in France! Windows, high ceilings, closest and desk space.
The host is very friendly and greets you upon each coming and going. This did not bother me, but it might bother you if you do not want to interact with your host, or are feeling anti-social.
Bonus: there is a delicious vegetarian/vegan restaurant just around the block from this location!!