The Beach House is 1.45 miles from the resort (I checked with a GPS today). There is a parking garage beneath the building and adequate parking in the surface lot (located directly in front of the building).
At times, the parking lot does fill up- since it's also a public beach access and local traffic is allowed to use the lot, but we've not encountered any problem thus far this week.
There is an elevator from the gound level to the entrance if needed and access to the building itself is by using your room id.