Clicking on the address will open a Google map in a new tab/window centered on the trial site and usually zoomed out to a level to get a perspective of the location. You can then zoom in/out as desired, switch to satellite view to see what the property looks like and enter street view to see what the entrance looks like. You can also get directions. To enter street view, click on the little yellow man. The streets where street view is available will be hi-lighted. You can then click on the point where you want to see the street view and drag the cursor around to rotate the view or click down the road to drive down the road. Google will often have photos of the location (in some cases, thousands)
The alternative lodging and RV links will take you to sites that will give you some alternatives to the facilities provided in the premium.