Watts Bar lake in mid April, accommodations?

My dad, my brother and I are looking for accommodation for 4 days down on Watts Bar Lake, mid region to the dam. Any suggestions for a nice place to stay, covered slips, and fish cleaning areas? We have stayed at Arrowhead, Rhea Harbor, Spring City Boat Dock, but it has been about 5 years ago. This may be my dad's last trip. He is getting up in age now and I am not sure how he will do.
Any suggestions on where to stay or even some areas to fish would be greatly appreciated. You can email me or send a private message.
Thanks,
Bassky
Dave;)