Would you use a 'Repository' pattern to communicate with a Web Service?

I have a web service that supports RESTful CRUD operations: Add, Delete, Update. On my client (Xamarin) I obviously I want to hide this behind an interface for mocking and possibly using a different technology to store my objects.

Would you use a Repository Pattern, Service Layer Pattern or another pattern? It seems like there's little difference whether you're persisting to a flat file, a database or a web service.