The layout of the ship makes it easy to navigate (there's one exception, explained below) with most of the public spaces located on Decks 5, 6 and 7, plus the pool/spa/Lido Deck (11) and the alternate restaurants and Sun Deck (12). A small but soaring atrium is located towards the forward end, with two banks of glass-enclosed elevators rising to Deck 12.
There are two main elevator banks, one forward of the atrium and one at the aft, and it's the latter that creates a problem. Those utilizing the aft elevators to get to the pool deck (or the Great Outdoor Cafe) have to wend their way through at least one restaurant before getting outside. This is particularly problematic when trying to get to the pool during busy dining times. The elevator bank is located smack in the middle of the aft dining spots, with the Garden Cafe on the starboard side and the Sports Bar and Pacific Heights on the port side. The only real way to avoid the awkwardness is to take the forward or atrium elevators to the pool or sports deck.
The rest of the ship flows nicely, with the occasional and expected hiccup due to galley placement (you can only reach Deck Four from the forward elevators, and anything forward of the Seven Seas dining room on Deck Five has to be accessed via the forward elevators as well).
The Deck 5 atrium area houses the front desk, concierge, shore excursions and the Java Cafe (specialty coffees and pastries for an a la carte fee), plus the entrance to the Four Seasons Restaurant. Deck 6 is the most beautiful, and the most fun, with Dazzles, the main disco-nightclub just aft of the atrium; Windstar Lounge; and Havana Club, the cigar bar. The photo gallery is also located here, in a wide corridor with dark walnut wood panels and blue carpeting; it's very elegant, and opens out onto the exterior promenade. Located along this corridor is the lovely and well-stocked library, along with meeting rooms and card rooms. At the aft end is the entrance to the main theatre, the Stardust Lounge.
In an interesting design move, the whole atrium area of Deck 6 comprises the Internet Cafe, run by MTN/Digital Seas. Computer stations are scattered around the central core so anyone using them doesn't feel isolated. Packages can bring your rate down from the a la carte 95 cents per minute to 52 cents per minute (250 minutes from $129 or 100 minutes from $85). Wireless internet is available too -- your laptop or theirs, your wireless card or theirs -- but the "hot spots" on the Sun at this time are limited to the atrium area and right around the pool.
Deck 7 is home to the shopping arcade, a paradise of trinkets, logo items, toys, clothing, jewelry, clocks, knickknacks, snacks and duty-free liquor and cigarettes, plus a high-priced branch of Colombia Emeralds International. It's also the location of the large Sun Club casino, nicely equipped with a variety of table games, slots, video poker etc. (I was really hoping to see someone try the lone $100 slot machine, but it didn't happen while I was in the casino). At the forward end of Deck 7 is the Kid's Corner, and at the aft, the upper-level entrance to Stardust Lounge.
The Observation Lounge is located forward on Deck 12, a sunny viewing space during the day, a hopping music and dance spot at night.
There is a small but lovely chapel on Deck 12 just adjacent to the Observation Lounge.
The ship has no self-serve laundry.