Student Intern for up to 6 month stay

I am American, currently living in the UK and about to undertake an internship in Paris. I am looking for a studio, preferably, but would be willing to share a flat as long as there are private bedrooms. I will be starting a PhD program while doing the internship, so I need to ensure wifi is available. Further, I would prefer a place that the utilities are already included. I enjoy a good night out, but I am going to be pretty busy between the internship and studies for the PhD, so my time for outings may be limited.