Stephanie's place was really cosy and we enjoyed our stay quite a lot. It's well located and the main touristic areas are reachable by subway within decent time (about 10, maximum 20 minutes ride depending on where you want to get). She was very prompt in replying and answering our questions.
We found the studio was quite small for two people, but if you are interested in a place to sleep for a long weekend, it's good enough. It doesn't work if you have plenty of luggage as there is not that much space.
Note that there is no wi-fi in the studio. For us it wasn't an inconvenience as we traveled from France, but it may be for other people travelling outside Europe.