This apartment worked out really well for us for a week-long stay in Lyon. It was very clean and comfortable in all regards. We loved the high ceilings and windows. The temperature got up to about 30 when we were there - I closed the windows and curtains when we were out during the day which kept the apartment cool. Also there are several fans in the apartment.
The entrance to the apartment building is a bit shabby - don't be put off by that - once you get to the apartment it is great. I really liked being on the river but the apartment is right on a fairly busy street - if you have the windows open at night there is a fair bit of traffic noise - by the middle of the night it is quite quiet. Having WIFI was great but it was occasionally erratic.
The apartment's location is great for walking - it is about 30 minutes to Vieux Lyon - only 5 minutes to the Metro.
All the communication with Marie-Josèphe was fantastic. Definitely recommend this place!