To give some context to my review: I stayed here for three weeks as I moved to Lyon for work, and this was my first accommodation in the city.
Positive sides:
-Wonderful location, stylish decor, well-furnished, clean.
Negative sides:
-Mezzo is actually part of a larger flat that was divided into two properties. The space is quite small, so even for a couple the space would be tight.
-There is no space to store your clothes.
-The flat faces the back of the building so it is very dark, even on sunny days.
-I asked for help to receive a letter in the flat's mailbox, and my request was just dismissed saying they don't have the key to the mailbox. No alternative solution suggested.
-I reached out to raise concern about water coming out of the washing machine (which is shared between the two flats), and the property manager didn't even bother to acknowledge my message.
-I did some remote working from the flat, and found the internet connection not to be ideal (Again, shared connection with the other property).
-The hair dryer is not working properly, but still there in the bathroom.
Overall I think the place is fine for a couple of days and maximum a couple; in case you plan to stay longer, or need to work from home, consider a brighter and bigger space.