I would go work in a resort town. You can get a job at really nice hotel chains with good pay if you know multiple languages and since they generally have hotels around the world you can travel.
Or a very international city, like New York. There's probably some variation of cities depending on the languages. Thinking from a US perspective, knowing Japanese or Mandarin might be more helpful in Seattle or San Francisco where German or Arabic might be more helpful in New York or Washington.
The reason I would pick resort town is because I would just do staff accommodations at the hotel which are normally really cheap. Also meaning I wouldn't be stuck anywhere really. It's super easy to find work and usually that work is a 5 minute walk away. It's also really easy to save money assuming I'm not spending it all on cocaine in my 40's.