We haven't been to the Royal Sun so we cannot comment on it as such. However we did try to go there last Xmas on a package deal sold by Ola holidays in cohorts with H Top.
If you are tempted by this or any such deal please use the url (copy and paste it if it doesn't work as a link) and read of our experiences.
The write up which is mostly about the Callela Palace describes how we we treated by the two companies involved and should serve as a warning to others
A & CM Kennedy