I won't call myself an expert but I will try to figure this out for you. Before Disney changed things at the BWI CL you had three different CL. Deluxe rooms that are all located on the boardwalk (water view) but half are on the 4th floor and half on the 3rd floor. Garden cottages that are on the ground floor looking over the quite pool and no were near the boardwalk and the standard CL that was a 50/50 chance of looking over the boardwalk or over the quite pool (basically sitting over the garden cottages). Since the boardwalk view was very popular Disney decided to give the boardwalk view it's own category(with a big bump in price) and the garden view is now the standard view.
Still with me? OK then Disney decided that the BWI CL was getting really popular so they added 10 rooms on the 4th floor to the CL, even though they are outside of the Innkeepers doors, and without adding any more room to the CL lounge. These rooms look over, for the most part, the village green area that is beside the Flying Fish restaurant, or the gardens by the quite pool. If you are in the rooms that look over the village green if you look to the right you can see the boardwalk so technically it is a boardwalk view(and therefore a Crescent Lake) but you need to crank your neck around a bit. Phew! I hope this helped a little.

So if I'm reading yours right you have a Boardwalk Inn garden view and that would be looking over the back gardens and quiet pool.