Aber "feel comfortable" klingt für mich eher nach bequemer Couch, und nicht nach einer Stadt, in der es sich gut leben lässt.
No, "comfortable" has a much wider range of uses than that!
Choose the Right Synonym for comfortable
comfortable, cozy, snug, easy, restful mean enjoying or providing a position of contentment and security. comfortable applies to anything that encourages serenity, well-being, or complacency as well as physical ease. started feeling comfortable in our new surroundings cozy suggests warmth, shelter, assured ease, and friendliness. a cozy neighborhood coffee shop snug suggests having just enough space for comfort and safety but no more. a snug little cottage easy implies relief from or absence of anything likely to cause discomfort or constraint. living in easy circumstances restful applies to whatever induces or contributes to rest or relaxation. a quiet restful vacation
Take a look at the example sentences in that entry as well.
Of course, "comfortable" isn't the only possible translation here.