This was the perfect airbnb. My fiance and I stayed at 5 airbnbs over the past month and this was our favorite flat. It is a small space but it was perfect for the both of us. It had everything we needed: a kitchen, comfy bed, shower with great water pressure (if you've traveled throughout Europe you'll know that water pressure is hard to find when taking a shower) and a washer. The studio is located on a lively street and as other people mentioned you can't hear any of the liveliness once in the studio which was great. Bastille is a wonderful area and it has buses and trains that bring you to all the major attractions in Paris. Bus 69 was our best friend and it was a 5 minute walk from the flat and the metro is also a 5 minute walk.
I highly recommend this flat. Thank you Alix for the recommendations and the laundry soap!