We just returned from a nearly two week honeymoon trip in Kauai.
Overall, I really enjoyed the resort, with one not so minor exception (see below). The positives, as I saw them:
1. Location: Fantastic. This southeast location is superior to any other resort. Since no road circles the entire island, this location is essentially a central point for traversing the entire island. If you stayed at, say, the Princeville (far North), you'd have to traverse over half the island to get to the great beaches in the Southern or SW part of the island. The Marriott's location makes it easier to hit most of the major sites worth seeing b/c it cuts down on the car travel time - and given the minimum $2.55/gal of gas prices, it'll save you a few bucks too!
2. Resort itself: Fantastic. You could spend far, far more on the Princeville or Hyatt's resort, but why? Yes, the Princeville's main lobby is exquisite to look at, but how much of your time do you spend in what is essentially your hotel lobby? And Marriott's lobby isn't exactly hard on the eyes either. Also, Marriott's pool simply trumps Princeville's six ways to Sunday. It's not even close. As far as Princeville's swim up bar - whoop de doo. It doesn't look nearly as nice as the photos suggest. Marriott's pool is 5 gorgeous acres! Combine that with their very nice beach, and you can easily see why a lot of Marriott's guests have to pry themselves away from the resort to see the rest of the island. Hyatt's pool (more a sprawling lagoon) is pretty cool, but I prefer Marriott's one gigantic pool. Also, Hyatt's resort is far more 'sprawling' than Marriotts. Marriott also has a beautiful small walking garden filled w/ native plants & grotto filled w/ humoungous fish and ducks.
3. Service: Excellent. They essentially clean your room twice a day. Once in the morning, and then once again at night when they 'turn down' the room. All employees are very polite.
4. Amenities: Pretty good. Heck, Jack Carter Helicopter Tours (the best heli tour on the island) has an actual office on site, which makes scheduling a trip a breeze. The Marriott has a wonderful piano player who plays in the evenings on the terrace above the pool, which makes passing the time there just terrifiic.
The negatives, as I saw them:
1. Room location: Mediocre. We scheduled our trip thru Expedia, which, b/c we scheduled a honeymoon trip, stated on our order form that we'd get a free upgrade from our "Garden View" room to a "Partial Ocean View" room w/ the Marriott. Well, we got there and were told that they were all booked (even though we were also told it was their "slow time"), but that we were on the top of the waiting list for a room upgrade. Well, of course, nothing turned up. The main problem w/ the room was that it was on the first level, so we couldn't ever open up the drapes since people could walk by at any time. Thus, "Garden View" translates into "NO VIEW AT ALL." The only saving grace was that at least our rooms weren't by the pool, so it was somewhat more secluded than those poor schlubs stuck in those rooms. Note: If you're stuck in "Garden Room View", INSIST on rooms 1501-1506, since all others are by the pool, with the total lack of privacy that that could entail. My biggest grief with all of this was that I would've gladly paid for better room at the very beginning rather than be let down by not getting the room upgrade promised on our statement and then being told the better rooms were all sold out. This is why the hotel loses one star from me.
As far as the food goes, it was a bit of a hit or miss. Kalapaki Grill (on site), to me, was just too expensive for ordinary sandwhiches. Kukui's restaurant (on site) offers a nightly buffet. It's $40 for adults on Fri & Sat (includes champagne, prime rib and king crab), and $25 on Mon - Thurs (no 'extras'). We went three times: One was excellent, one was OK, and one was just plan poor. On all occassions, the fish on the buffet, while good, was slightly dry (due to slight over cooking). Desserts were OK (not bad, but not fantastic either) - the choclate offerings were like those you'd have a mid tier wedding. Be sure to check the buffet overings before sitting down to see if what you like it what their offering. Both joints will give you a 10-15% discount if you have Marriott's 'Maholo Card'
Also, Dukes (on site) is simply too pricey for the food they offer. To save a few bucks, I'd suggest Tip Top Cafe (fantastic breakfasts) and Bubba's Burgers (good deal IF you get the 15% off coupon in '101 Things to do in Kauaii' magazine.)
Overall, I'd skip the tropical drink offerings at the Marriott (and elsewhere) - they're simply too pricey for the average drinks you get, and you probably make better ones at home. There is a liquor store nearby ('City Liquor') and the local KMart has two aisles of liquor offerings. BTW, the KMart kicks the Wal Marts rear end six ways to Sunday as far as offerings and prices.
In summary, if you want to stay at a nice hotel, the Marriott is simply the best choice. I could go on for days about the pool and beach, but I think you get the idea. You could spend more for Princeville or the Hyatt, but it simply isn't worth the extra money you'd spend, period. Just remember, if you do get a "Garden View" room, make sure you get 1501-1506. Finally, if you like to booze it up, either drink heavy BEFORE your trip, or get you booze at KMart or City Liquor. :)
Given what we learned on our first stay here at the Marriott, we think we'll enjoy our second time there more. It'll probably get that fifth star from me then ;)