Are kids going? If yes what ages? There are only 4 rides open right now in Hollywood Studios. If you only have a day you could get a park to park ticket for universal/islands of adventure (but depending on time of year could be too crowded to do everything).
For adults only trip Universal would be my choice.
With 4 days you could cover all the main Disney Parks. But, for a group of adults, I’d probably go Universal and stay there so you can bounce between your pool and rides easily (plus CityWalk at night).
At this moment in time I’d say Universal..
To costly for HS with rides closed & all the work going on..