All around great experience!
I spent 6 nights at the Sofitel in April of '04. Wonderful service, really comfortable and beautiful rooms, great room service, fun/relaxing bar! The hotel is gorgeous and such a welcoming vibe. I have stayed at the Sofitel in NYC a few times and always get amazing service there as well. Great location near Trafalgar Square. One amenity I must rave about, is the high speed internet service...from what I hear, many hotels in London do not provide this and it was a must for a long business trip. It was great to be in such an old city, yet stay in a place with all modern amenities (but charming as well).