As described, the apartment is very close to the central station. And even though train tracks are close to it, you don't hear the trains.
The neighbourhood is alive though, so you might hear people in the evening and in the morning, talking in front of the window. I didn't find the bed very comfortable but it was spacious. Some people might need an extra pillow - probably good to flag in advance.
The place was clean but not spotless. Sheets were very nice, though.
The owner was very flexible with check-in which we appreciated very much. Communication was excellent.