Rounding out the top 10 were Osaka, Japan; Calgary, Canada; Sydney, Australia; Vancouver, Canada; Tokyo, Japan; Toronto, Canada; Copenhagen, Denmark; and Adelaide, Australia.
Singapore's score improved in the public healthcare category, where the city-state achieved the highest possible score, the report said.
Hong Kong - whose ranking on Economist Intelligence Unit's (EIU) Global Liveability Index fell dramatically in 2015 due to heightened fears of unrest as part of the so-called Umbrella Revolution - was overtaken by Singapore in the rankings for the first time previous year.
For the first time in this survey's history, Austria's capital Vienna tops the table with an nearly flawless overall score of 99.1%.
The survey measures 140 cities across the globe on a range of factors, including political and social stability, crime, culture and environment, infrastructure, education and access to healthcare.
In fact, three Australian cities entered the top 10 while another three came from Canada.
This year, a downgraded threat of militant attacks in western Europe as well as the city's low crime rate helped nudge Vienna into first place.
Pogba tight-lipped over United situation for fear of being fined
No, I just have to be myself and do what I know, do what I can do and do what I know to do. Pogba was also asked about the contrast playing for Red Devils and Les Bleus.
Who beat Melbourne? None other than the criminal city of Vienna, best known for opera and having honestly way too many museums.
Globally, Vienna was ranked as the most liveable city, followed by Melbourne; the least liveable was Damascus in Syria followed by Dhaka in Bangladesh.
The survey also looked at cities where long-term improvements had been made. The Asian city achieved a score of 91.3% this time round, moving up to 35th place.
A bird's eye view of Dhaka city.
Puerto Rico's San Juan, which was hit by two hurricanes in 2017, experienced the sharpest fall, dropping 21 places down the list to 89th place, with a score of 69.8%.
In total, 68 cities have seen their liveability ranking improve over the past year, while it has declined in nine cities.