CruiseMapperDeck PlansMS Serenity deck plansMS Serenity deck 4 plan (Sun)MS Serenity deck 4 plan (Sun)Deck layout and review Deckplan info All deckplans Ship Wiki Previous Deck 3 Previous Deck 3 All Deckplans Ship WikiReview of MS Serenity deck 4 (Sun)Sun Deck with deck chairs and loungers.