We have just stayed for a week at Pénélope's little apartment in Paris in the Bastille area.
This was our fifth visit to Paris, and for us the location was perfect, close to the bus and metro stations, and with Velibs just up the road which we used to get around Paris most of the time. There is an abundance of cafés and restaurants handy to choose from, supermarkets nearby, and a boulangerie and patisserie across the road. It was nice to be far enough away from all the busy tourist areas, but close enough to be able to reach them easily if we wanted to.
The apartment itself is small, quiet, peaceful and completely self-contained. On arrival we were met by Pénélope's step-son, a charming young man who gave us the keys and explained everything to us. It is on the first floor, and is accessed by stairs. Everything we needed was provided, and Pénélope kept in contact with us by email to ensure that our stay was comfortable. We would say the apartment accommodates two comfortably, but it would be rather cramped for four, even though it is possible. We recommend it for a couple who want to come and go, stay somewhere quiet and feel like you're one of the locals.