Using computed properties to provide display values for stored properties

I have a model class which keeps, amongst other things, the user’s current location.

While the location is used for internal calculations, there is also a screen where I display the current location to the user. Formatting the two values for display is easy enough, but non-trivial and worth encapsulating. I found the simplest way to encapsulate it was by creating a computed property on the model class itself.