The only time I've been in a situation where I needed to take a taxi but didn't speak a common language was in Paris. I simply showed the driver the address as written and he got us there with no problems whatsoever. Granted Paris is pretty easy that way as rides (both taxi and Uber) from the airport are fixed price.
Alternatively I bet just pulling up the location on a mapping app would be enough. Of course in most countries I've been to, the public transit infrastructure was good enough that I never wanted to bother with a taxi of any sort.