Wheres The Best Places To Go In Spain Or Greece?

Ok so my Mom wants to go to Santa Posa, but im reading articles on it and it says its very overcrowded & noisy, and i dont want that! I couldn't find any places that i like in Spain, so i checked up Greece, & i got no good places there either! so can ye name out a good few resorts that are beautiful? beach resorts preferably, Thanks!