Lexington. River taxi will take you right to the park.
Omni also Hyatt Recency the omni is actually downtown
You got a lot of hotels downtown but depending on how far you want to go from the park downtown is going to be a little bit pricey what you do have hotels in Orange Park in a little bit up 10 I think two to be exact but just Google it but happy Hunting good luck
The Hyatt and Marriott are Downtown on the same side of the river but quite a hike on foot.
Doubletree is on the other side of the river but I don't know if anything is on this side.
Thanks! Your answer is awaiting moderation.