Do not get a 'lower level' basement room if you value your sanity, the tube line runs very close and the mirror and bathroom door shakes every few minutes from 6AM until midnight, and once that quietens, you're next to the road and people entering the property using the buzzer at the late hours.
It's the cleanest and nicest furnished hotel on the road, but the basement rooms are genuinely unbearable - this is the first time I've ever, ever complained.
Honestly, you'll thank me.