During my trip to Aruba, I spent three nights at the Aruba Marriott Resort & Stellaris Casino. Despite it being part of a chain hotel brand, the Aruba Marriott feels very unique in terms of decor, layout, and ambiance.
I visited during the beginning of high season, so while there were plenty of other guests around, it didn't feel overly crowded. That probably has a lot to do with the size and scope of the property. The Tradewinds Club basically functions as a boutique hotel within a large hotel: it offers customers extra perks like access to an exclusive lounge (with complimentary food and drinks) and a suite on the eighth floor.
There are also two main pools that allow for a bit of separation between couples and families. The main pool has plenty of lounge chairs and a swim-up bar while the adults-only pool has a bar on-site as well but is much quieter. So, whether you're in the mood for laid-back Caribbean tunes or eager to catch up on a good book, there's a pool for you.
In terms of restaurants, there are several offerings. La Vista is a popular spot for breakfast, as their buffet brunch features dishes like Eggs Benedict along with fresh fruit smoothies and mimosas. I'd recommend snagging a table outside if you can. It's in the shade yet still close to the ocean. Simply Fish is another top spot, especially for dinner. Several tables are set up right on the beach so you can have a sand-in-your-toes fine dining experience.