it's a resort. no breakfast, no lounge, no real benefits. free WiFi but they charge a resort fee, so it's not free. also parking costs $
I'd recommend one of the Kessler properties if you're not tied to Disney. the castle (free breakfast), the Grand bohemian (concierge lounge), or the bohemian hotel celebration (breakfast) .
lounge @ grand bohemian is closed on weekends though, heads up.
It is a nice property, but not amazing. Since it is a resort, you get almost no Platinum benefits. Meaning you might get an upgrade, maybe, probably will get a good view room in the main tower, but that's it. They charge a resort fee, as do almost all resorts in Florida, and parking is not free. It's also a LONG walk from the parking garage to the rooms, especially if you're not in the main tower, so valet if that's important to you.
The building is somewhat dated, however the staff was always friendly. The property is massive, so get your bearings before wandering around. I actually got lost twice. The pool is fantastic, but gets very, very crowded.
It's not near anything, like at all, so definitely have a car and be prepared for that. No restaurants or convenience stores right nearby either.
Overall, I stayed for a week there, and would not stay again, but the "resort" experience is not that important to me. I'd rather be near the action and have perks than be at the massive resort.
Have you considered the Marriott Vacation Club, Sabal Palms located on the same property? I stayed there with my family this past September and it was excellent. As a previous review noted, there is not much in the area but this very small VC only has a 50 villas or and is tucked away behind the World Center Marriott surrounded by a golf course. We stayed there and went back and forth to Disney. One of the key perks is that you have access to the World Center pools. Something to consider if you want more space.
I second Wackman with the recommendation to try Sabal Palms. Royal Palms are also good but further from the World Center main building. Both have 2BR. Imperial Palms has 3BR. I stay at one of these every year for a conference at the World Center and really prefer them to the actual hotel. Sometimes they cost less than the hotel rooms even though they are 5 times bigger with washer, dryer, full kitchen, etc. There are shuttles back and forth if you need them, and you get access to separate fitness facilities that are less crowded than the hotel's. Plus parking is free.