I shopped for our London hotel using the reviews here at TripAdvisor, so I want to share our experience at the Trafalgar Hilton.

Our flight was to land at Gatwick at 7am, which would put us at the hotel at about 10am. I emailed the Trafalgar Hilton requesting an early check in, knowing that they could only provide if available. We arrived at the hotel at about 9:30am in the pouring rain. The staff whisked us from the taxi into the hotel. They already knew who we were, they were expecting us. Our room was ready within minutes of our arrival.

Everyone was friendly and helpful. The concierge offered excellent tour and dining suggestions. We had the breakfast buffet every morning. I would have considered the breakfast buffet pricy if it was not already included in our room rate, but it was plentiful and tasty. There was even live music (jazz guitarist or coffee-house-style guitar) with breakfast! If you choose to not take the breakfast buffet, there is a Pret a Manger less than 1 block away.

Our room was quiet and comfortable. We like a more-firm bed, so we found the bed to be very comfortable. Our stay did not include a Saturday Night, but on Friday the Lobby Bar did get hopping. We never heard any of the music in our room; our room was as quiet that night as any other night.

You can't beat the location! Many of London's tourist attractions are walking distance from the Trafalgar Hilton. We were in London to be tourists, so location was important to me.

We had a wonderful stay at the Trafalgar Hilton.

I recently stayed at the Trafalgar Hilton on business.
My driver had some difficulty finding this hotel, because the building only has a "The Trafalgar" sign on the outside.
One enters from a small side street across from Trafalgar Square.
Tthe majority of the first floor is occupied by a large bar.
Check in is a little clumsy; a couple of desks in the corner of the room. I am a Hilton Honors member with an established profile as a non smoker. I had asked for a room on one of the top floors because I had been warned that the bar can get noisy and the noise can carry. I was given a room on a top floor, but it was a smoking room. I promptly asked for a different room and was told the only availability was on the first floor. I reluctantly accepted. My room was above the bar, and on the main street side. The noise at night was loud enough to wake you.
In general I found the staff to be polite but cool. The uniform is black and the greeting at the door when entering the hotel was cold.
I was disappointed with the hotel. The bar, a boubon bar, even by London standards is expensive ($15e for a shot of good bourbon).
The location is good, but I found the general charm, and courtesy of the staff to be lacking.
I would suggest investigating some other choices.

Stayed here last saturday night, booked it the night before on lastmin.com, got double room for £80, a bargain. Hotel is in the best place in London, right on trafalgar square. The check in was smooth and staff very polite. My room was on the fifth floor with a side view of the square. Excellent room with all mod cons, dvd player, hi fi and flat screen tv, even an iron and ironing board. Went out for the evening but I had a drink on the roof terrace bar over looking trafalgar square. Its fab you must go up there, drinks a little pricey but still worth it. I left my bag the next day so I could visit the sights of the capital and the staff were again very helpful. I would highly recommend this hotel and would love to stay again sometime.

It was our first trip to London and we weren't sure what to expect in a continental hotel. The Trafalgar London (a Hilton property) is outstanding--very modern and clean, a top notch staff, and a cozy roof-top bar with great views. The hotel is located in Trafalgar Square and is thus within easy walking distance to most of the major London tourist sites. We walked everywhere and the Trafalgar's location allowed us to do that and avoid expensive transit costs. The nearby "Original Tour" buses were great too--check them out. You can ride all day with on/off privileges for one price. Definitely consider the Trafalgar London if you are heading for London.