The apartment was perfect as a solo traveler! It was exactly as described - it’s a small space, but it wasn’t a problem.
The most important thing is that the location was as good as you can get - central, close to useful metro lines (super quick to get to any of the main tourist attractions), walking distance to a lot of cool areas, and in a lovely relaxed neighborhood with tons of cool boutiques and great restaurants.
Having an elevator was great, and the view from the window is amazing. The blackout curtain makes it easy to sleep well and the bed is comfortable. (You can hear a bit of street noise at night though, but I slept fine).
Sèbastien was quick/responsive in communications, and checking in and out was easy.