I think you'd get tired of any one place over an eternity. You'd need to go somewhere fairly large eh?
And most fictional universes have an existence that hinges on conflict, so they're dangerous often with beings of unimaginable power duking it out, crashing through your living room.
In the Marvel and DC universes super people go flying through buildings all the time. You think nobody gets hurt? Even if you picked a universe like Bleach's where super heroes fight and somehow manage to never hit a house there's civilian casualties all the time. Lord of the rings? Orcs. Elderscrolls? Daedra, Taescaci, bandits, cultists, CLIFF RACERS. Mass effect? Reapers.
I'd say go to the Dead or Alive universe, why not hang out on a beach with gorgeous ladies forever?... And there's all the big cities of the world represented... but see Ryu Haybusa lives there and hence so do fiends, who gobbled up civilians in Venice and New York.
In short... I need more time to think about this.