I've had a fantastic experience at the place. Marine was a wonderful host through the whole stay: she will show you around the apartment and the nearby area if she has the time and answer any questions she can.
The location is well-connected to transport: T4 from Part-Dieu, C16 from Grange Blanche and C15 from Mermoz-Pinel, all with bus stops within 2-3 blocks from the place. You should have no trouble getting there. (the stops for T4 and C16 are Professeur Beauvisage CISL) There is also a Vélo'v station right at the intersection of Prof. Beauvisage and États-Unis, which is the cheapest means of transport around Lyon if you're a student: the annual subscription for students costs around €16, as opposed to a €31.6 monthly "abonnement" for TCL (Lyonnais public transport).
Rue Professeur Beauvisage is currently under maintenance, so if you're like me and you have a hefty suitcase that can only safely be used on 4 wheelies, you might have a hard time pushing it through the gravel.
The restroom experienced a few instances of the toilet leaking, I hope it gets sorted out eventually.
Blvd. États-Unis has a wide range of stores, and you can shop in Auchan just at the intersection with Rue Prof. Beauvisage. (it works from 8:30am to 8:30 pm on work days, from 8am to 8:30pm Saturdays, and from 8:30am to 12:30pm Sundays). However, I would recommend that you shop for food in any of the Lidl stores, which are more affordable than Auchan. One of them is at the tram station Rue de l'Université in Guillotière. You can ask Marine if you want any advice.
Although the apartment is on the 7th floor (with the count starting at 0) the house has an elevator so it shouldn't be a problem.