Ok breakfast, 3/5.
The electrical socket in the bathroom (room 511) was loose and hanging, which may not meet safety standards.
The room was located next to the elevator, and the noise was quite noticeable—I initially thought it was airplanes passing overhead, but it turned out to be the elevator moving up and down.
That said, I would still stay there again. The hotel is modern, well-maintained, and centrally located, although the room was on the smaller side.