Romy... like everyone else says, is great! She greeted me at the door and we chatted for a bit but not in the intrusive way. As a super organized person myself, I appreciated the "handbook" that had all kinds of instructions and recommendations. Although I didn't take advantage of it as much as I could, I appreciated knowing that I had it close by.
The location was great and close to a lot. This was one of my main criteria when looking for places. It's right above a little shopping area so if you were a little tired but still wanted to walk around, it's actually a neat little shopping area. Also, if you're coming or going to CGD, this is also a great location. There's a super easy bus/shuttle that is a short 10-ish minute walk away and is only 12 euros. I took it a 5:30am and it took about 50 minutes. It was cheaper and easier than other options.
I'm fairly young and health so the stairs were fine with me but if you have a lot of luggage, are not ok with stairs, or just don't like being high up, it might not be the best place for you. Romy lets you know that (and I think it's in the description) but take note.
Overall, Romy was amazing, the place was quiet, clean, and I would definitely stay again if/when I make it back to Paris.