"Το ξενοδοχείο είναι στην ακτή."
Μετάφραση:The hotel is on the coast.
To my ear, "in the coast" sounds very odd; I don't believe I've ever heard it. We would be much more likely to say "on the coast."
Yes, sounds quite unnatural to say "on the coast". http://forum.wordreference.com/showthread.php?t=676639. The sentence is given from the app though. I just had to make a report in Incubator. Thanks for bringing it up.