We enjoyed our stay at Artisan's Loft. As the pictures show, it's a very small space - which we were okay with.
The courtyard it's in is nice, but as it's surrounded by quite high buildings it doesn't get much light. This means you don't get much natural light in the studio.
The decor in the studio is tasteful and modern, and has everything you'd need for 1 or 2 nights. We found the mattress to be too firm to sleep on comfortably, and we could definitely have done with another couple of pillows. The shower has excellent water pressure and heat, but the cubicle is very small.
The location of the studio is excellent. It was easy to find, and in a great position for exploring Paris.