We booked this hotel on HRS.com just shortly before we traveled to London and got it for a very fair price, especially as London is a very expensive city.
Firstly, the location of the hotel is quite good, it's in a quite area near to Hyde Park and is not far away from a tube station. The welcoming was friendly, but to our surprise the room was in the basement, where it said: "No entrance!", which was obviously kind of shocking for us in the very first moment. But, it turned out to be a very nice, big room that even had a small kitchen. Everything was clean and prepared, so we didn't have to complain.
The only thing that didn't really work out was the breakfast that we ordered for the next morning. It didn't appear, although we had already paid for it. After some discussion at the reception and a short phone call we solved the problem and got our money for the breakfast back.
All in all, the hotel is really fine for a short trip to London! If you get a room with discount on HRS.com or another booking website, please be aware that you also might get the room in the basement or you have to call the hotel before booking a room.