There's no top sheet (sigh), only a duvet. There's a risk the other people in the room will be loud and wake you when they come back to their quarters as there's only a small hall that all rooms face.
There is a separate toilet for men and women down another corridor and the women's smells like mildew (and there's some mildew along the wall).
The shower towels are DINKY. I'm a slender person and still needed two to dry off.
Make sure you contact the owner beforehand for entry as there's no general reception.
I was initially nervous at staying here after a quiet stay at nearby, quiet Uni Hostel as this place is located on a street with bars.But the hostel is actually way, way back of another building even though the entrance is initially on a noisy street. So there is no street noise. 4Rooms is designed very modernly- whites and greys, OK-sized room with a large bed and desk. It's good for a couple as well. The wifi signal is strong.
There's a very large bathroom/shower all the four rooms share with a showerhead and tub. The other side of the room has three sinks with mirrors, a hairdryer. There is great water pressure and hot water.
Thankfully, the place was very, very clean. I asked some rowdy young guys to keep it down when they would come back late in the night and they did.