We stayed for 2 nights in a BWV studio with an almost 4 year old and 2.5 year old. My family stayed on the Inn side many times when I was younger, so it does hold a special place in my heart. I hadn’t stayed there in years.
My daughter LOVED the Dumbo Murphy bed.
While the theming isn’t overly Disney, I just LOVE the theming of the Boardwalk. It’s so colorful, happy and immersive. They do children’s activities out on the Village Green. My kids loved running under the parachute they had out.
We had a studio overlooking the Village Green and loved it! It was a Garden/Pool view, but it really had a partial view of the Boardwalk. It was just a short walk from the lobby elevator. Really enjoyed that location. I had requested the Village Green view and was really happy with it.
We normally travel with more people and stay in a larger villa, but the studio was comfortable for us as a family with 2 adults and 2 little kids. We were only there 2 nights but I would have stayed longer, it was just a very short visit!
I would choose BWV over YC. While YC gives you access to Stormalong Bay, I think BWV overall is more enjoyable for small children. Just my opinion!
ETA: I saw you mentioned bedrails for the Murphy bed ... my daughter didn’t need them in the Murphy bed and my 2.5 year old was in a pack & play. I don’t know if you can request them, but the bell man suggested taking the 2 dining chairs and pushing them up to the side of the Murphy bed if we were nervous about our 4 year old rolling out. He said lots of people do that because you need to put the chairs somewhere!