We've stayed there several times, also stayed at the JW Marriott (they share the property).
What are your other plans-- parks, beaches, anything else?
The Ritz is closest to Seaworld, not far from Universal Studios, and about 20-30 minutes from WDW.
I think everything in Orlando is going to be crowded Easter Week-- many places have Spring Break that week. With that said, I think the Ritz can handle those crowds very nicely.