It is, by far, my favorite European city.
World's best and worst cities for quality of life revealed: Vienna is No1, Vancouver is top in North America, London slips to 41st and Baghdad comes bottom
Honolulu ranks first in the world for city sanitation, an important factor in cities’ attractiveness
UK’s highest ranked city, London, ranks 41st for quality of living (down from 40th), 67th for sanitation
Vienna is top for the 9th year running and is followed by Zurich, and Auckland and Munich in joint 3rd place
San Francisco (30) is the highest ranking US city, followed by Boston (35), Honolulu (36) and Seattle (44)
Scroll to the bottom @ Vienna named as city offering the best quality of life in the world | Daily Mail Online for the full ranking
Doesn't indicate exactly what criteria was used for the ratings.