Over the course of my rD weekends, I've stayed a several resorts. My take:
All Stars - low cost, and their bathrooms till have tub-showers where you can soak after races. Get a room away from the pools and it isn't bad
Pop Century - recently this has been my go-to because of the vibe (can't believe I'm using that word), the happy coincidence that it has became an informal runner HQ, and the Skyliner access. I always ask for rooms as far away as possible, and upper floors. Get out in 70s land and your door is facing Hourglass lake. Very tranquil.
Grand Floridian - Got to stay there as part of DW's work convention. Fairly quiet and gotta love the access to MK and the resort monorail
Coronado Springs - Have gotten to stay their twice as part of DW's work convention, once in the tower, once in a bungalow. I really liked the bungalow and it was a fairly short walk out to the bus stop.
PO Riverside - I just left my first stay there. OMG it is so quiet compared to the other resorts. I'm booked for Pop for MW 2027 due to length of stay, but I'll have PO on my mind going forward.