Mattress felt like it was 20 years old!
Could squeeze both sides of the mattress together, could feel the bed base when sat on the mattress and could feel the springs when laying on it, both beds in the room were the same and I was offered an alternate room but the mattress had exactly the same issue. Ended up sleeping on top of 2 double duvets folded in half and a thick mattress topper to make my night vaguely comfortable and bearable. Will certainly not be staying here for my next trip to Edinburgh. The Premier Inn next door was far more comfortable, you didn't get any noise from the road and was actually slightly cheaper