 A real radiator in the room room 502 one connected to the central heating would have been nice There was a broken sort of heating unit under the window Heavier curtains that actually close to block off the window in addition to the thin blind would be good too I appreciate I was in a single room and these are often overlooked by hotels as if we do not matter but to be up in the roof space in a poky room with a tiny electric oil fired radiator plugged in well I think you can do better The duvet was as thin as a pancake and not at all warm I needed the towelling bathrobe on top of my bed and a jumper to sleep in The radiator was plugged into the only useable 13amp socket in the room This is because the other sockets are placed so low down you cannot get a plug into them without damaging the flex So for charging phones using a laptop I had to unplug my only heating source Plus at 6am in the morning the shower was not hot enough 
 Bed was very firm which I like but room was cold Excellent location albeit on a backstreet but an excellent location for Hyde Park Corner Piccadilly etc Staff on reception were lovely 