The Radisson Edwardian Hotel Bloomsbury is a decent 4 star hotel. I was transferred there from another Radission Hotel in London - it apparently closed during christmas - but was told that this one is a better choice in the Bloomsbury London area.
The room was indeed very small, but the receptionist who showed me around the hotel convinced me that next time I will get an upgrade to a larger room. nice. Overall, the hotel is recommendable to anyone who want to stay in a London hotel near Oxford Street. Breakfast was slow, but good - and luckily I had a bit of time on my hands for a change. Be careful with the internet though, wireless is free, but slow. Cable will set you back around 13 pound sterling for 24 hours.