Really? Who told you that?
I've seen some folks on TUG say they like 6 or 7 because they're newer, but our unit in building 2 was in top-notch condition. I really, really liked being in 2 (or 1) to be close to the pool, bar, and snack bar. It was especially important for us, with a 5 year old granddaughter in tow, to be close to the pool. If you're not concerned about that, I guess any building will do. But I have a strong preference for 1 or 2 to be near the resort facilities.
I don't understand the "view" comment, though. We had a great view of the pool and lagoon. I'm not sure there's anything additional that 6 or 7 would be able to see.