Marviellac
Chieftain
Writers, artists and musicians. I'm wondering what are your strategies

- Do you always build all 9 of them? Or is it a relevant option to go for example into artists only and not even build amphitheaters? (if not going for culture victory)
- Do you build specialized culture cities with all 3 types or do you use the guilds to combat boredom and spread them more?
- If specialized, what's important for this kind of city regarding terrain, improvements, infrastructure and buildings?

, I tend to build only the 3 Writer's Guilds in my 3 core cities. This changes when I go Progress-Domination 
or Science
, I build everything except the Musician's Guilds.
, I build everything.
is what's really important. You want 2 or 3 guilds
in your capital, depending on your objective. After that, one guild per city is not bad.
... Obviously.
)