Sabrina's flat is right in the heart of Vieux Lyon, so in terms of location, if you want to explore the city, this place can't be beat. The flat is modern and stylish, but with some elements that remind you that you're in Vieux Lyon, like the stone walls in the bathroom, and the big beautiful windows you can open for fresh air and the sounds of people in the street below. When I was there, I opened the window and heard an accordion player just below playing old French songs. Sabrina and her husband are extremely kind and accommodating, they told me to help myself to anything in the cupboards or refrigerator, and they left out a small breakfast snack and things to make coffee. The bed is comfortable, not accessible to someone who can't climb a ladder, but I believe the couch also pulls out as an additional bed. The place is very clean and very comfortable.
Short version: I highly recommend this place for anyone wanting to stay in Vieux Lyon. It's very cute and fun, ideal location, and fantastic hosts.