There is a location property for elevation markers, but it appears to not be exposed as things currently stand. You could do some API work to expose the info you’re after via Python or other bit of coding.
If you think this should be exposed by the native node please submit an issue report to the Dynamo for Revit GitHub, being sure to include the relevant files for development to reproduce. https://github.com/DynamoDS/DynamoRevit/issues/new
Note that this will be the location of the BOX which your elevations are hosted to rather than the views themselves, and that the out of the box parameters node will fail to report the hosted views which could prove problematic downstream. There is a View.Plane node in clockwork which could get the location of the elevation views, but that location can be a bit different than expected.