The location is wonderful, you just need to cross a small and quiet road to access the swimming pool, restaurant and natural beach with dunes.
Contrary to other comments, I thought the staff was quite friendly and attentive (at least once you asked them for something they were happy to follow your request!), some extremely friendly and helpful, others less! The same goes for the food, we had fine dinner there a few times, breakfast was also ok with a big selection of fruits, warm dishes, and especially sweet delights!
As mentioned in other comments, Marina di Modica center is easily accessible by foot if you walk along the beach. Do not expect much, there are a few restaurants, Gelateria and one mini market, as well as a play ground at the end of the promenade! Cosy and perfect for a relaxing stay with the family.