Pros:
* It's a very beautiful city in general
* I see more trees than buildings from my window despite living centrally
* It's close to the sea
* People are generally nice
* Despite what people say, public transport works well, although it's rather crowded in the summer due to Gothia Cup and festivities such as Pride and Kulturkalaset. People have a tendency to remember the relatively few times per week that a bus or tram is notably late or break down, and forget the bazillion times per week when there's no problem. And if you can't afford a five-minute delay, then you're the one to blame. Plan ahead.
* There are few main roads in the most central parts of the city.
Cons:
* It's increasingly difficult to get an apartment to rent, the average number of days in queue before signing a contract on http://www.boplats.se increased from 526 days to 950 days (an increase of 81%) between 2010 and 2013.
* If you're looking to buy, it's really expensive.
That's about it.