We recently had the same dilemma. Our trip is in Sept and we debated between BC, Pop, and WL. We have stayed at all three in the past. In the end we chose Beach Club. Its location is superior as far as we’re concerned. The vibe is calm and peaceful…just like WL but in a different way. Yes there was a price difference between Pop and BC but like you, it’s just the two of us.
If you’re just looking for a pace to lie your head, then Pop or Riverside are your choices. If location and ambience are important then BC wins the day.
Just my 2 cents.