I have had an excellent time staying with Marie-Eve and her family in Arcueil. You are made to feel extremely welcome in their home. Staying with the family has been brilliant for improving my French, but if you ever come unstuck Marie-Eve speaks good English too. The room and bathroom are clean and equipped with everything that you could possibly need during your stay. The house is located in a safe and friendly neighbourhood. You are just a stone's throw away from the train station, Laplace, from which you can get to Paris in next to no time on the RER. A great shopping centre is also within walking distance from the house. I would fully recommend this Homestay opportunity.