I just went to London over the summer, and I have to say it was none of these things. Perhaps it deserves a second visit. It was one of the cleanest cities I’ve been to. The buses are very nice and clean, the tourist sites aren’t too hectic, and the only mean people tend to be us foreigners. It was not a very cheap city, but in my experience the City of London and the City of Westminster were cheaper than New York City. Maybe because the US dollar has had a strong run this year 😉