We booked through Expedia and were pleased to be told we'd been upgraded on arrival to an "executive" room on the lower ground floor (basement level.) The room was large and the bathroom was the star - with a jacuzzi tub, double shower and a small bathroom television, which was a first for us! The room's location on the lower ground floor did mean that the windows opened into light wells covered by glass, such that if you leaned out the window you could see people walking by. We didn't feel that anyone could see into the room, however, so it was fine, but a little strange. The bed was comfortable and the staff were really helpful in providing directions, recommendations for nearby food and activities and calling us a taxi when we left. I would recommend it as very convenient to transport links and museums as well.