don't be silly corn
not all Ibiza is San Antonio
90% of it is extraordinarily beautiful, quiet, unspoilt and it has the reputation of the best sunsets in the world (can vouch for all of that)
we have been for the last 2 years and love it
it is like Majorca, but quieter, less developed and smaller (unless you go to the bang-bang resorts )
you said you wanted sun, slides, on the beach, your budget will stretch to a decent 3 star hotel like that one
btw, I don't have shares in it