noun
BAD : It is one of the most popular touristic resorts in Spain.
GOOD : It is one of the most popular tourist resorts in Spain.
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Touristic and touristy are used, especially in informal styles, to describe a place that is unpleasantly full of things for tourists to see and do: 'He refuses to go there any more - it's become too touristy.'
When you simply mean 'visited or preferred by tourists', use tourist + noun: 'London is full of tourist attractions.' 'During the tourist season the hotels are packed.'