They are both lovely, but I give the slight edge to YC for my own family as it tends to be a bit quieter than YC. You'll have a slightly further walk from the EP entrance, but a closer walk to the BC/YC boat dock. As PP mentioned, it was recently refurbed and I think the rooms are gorgeous. You will also get a full balcony whereas, at BC, you may not. For an adults-only trip, I would do YC.