The only thing that I found extremely annoying was that my room had a glass door. It was covered with a sticker, so presumably people couldn't see in. But the room is opposite the shared bathroom, which is always noisy and the light was always on. Especially if you have lots of people staying there, as was the case when I stayed there. I was constantly woken up by the noise and light. If Niko replaced the glass door with a real one, the room would be great.
Everything else was good. No other complaints. Niko was very helpful.