The view truly is spectacular.
There are also 120 steps (which is fine) and it's in a boring neighborhood (but right next to a Metro and there's a farmer's market on Saturday mornings right around the corner).
The only downside I would say is that the windows are very small. Excellent view, excellent photos, fun to see the Eiffel Tower at all hours throughout your stay, but not something you can sit and enjoy. You have to be standing to really appreciate it. I found that a bit of a bummer and not totally what I would have hoped. I imagined sitting and hanging out and looking out at the view, but in reality you either needed to stand in the bedroom or kneel on the couch to see out. Would still recommend a night or two here though!
It's also a bit stuffy and hot: I needed to sleep with the windows open at night, which was a bit noisy (light street traffic). Woke up too hot one night when I didn't keep the windows open. Bring earplugs. Also the music for the Tour Eiffel is on loop, so you hear it ALL EVENING and night long. Seriously. I think it stopped at 1am. haha. I might have it memorized.
Overall lovely spot. Definitely recommend the apartment. Check in was easy once I got in the front door (couldn't reach the host when I called 2x in the evening from the door machine, but then somebody else came out and I got in). The keys are easy access and check in and check out were all done without anybody there.
The shower was excellent: Nice water pressure for Europe (haha) and nice temperature.
The apartment is spacious and has nice seating and hanging out areas. The wifi was fast. The small fridge is nice, although I didn't really use the mini kitchenette.
The bed is comfy enough to sleep on.