We just spent a wonderful 3 days in Novi Vinodolski, located quite nearby Rijeka and Crikvenica. Novi Vinodolski is good for families. It offers wonderful stone beaches and plenty of activities in the ocean. Novi Vinodolski's breathtaking beautiful nature is as gorgeous as everywhere in the Croatia's coast line where I have visited so far.
I had booked us accommodation through AirBnb from Darija's house. Darija's place was cozy, nearby the center, with almost an own private beach: only 1 minute away from the closest, quiet swimming spot. Darija's parents where greeting us when we arrived. They welcomed us warmly with a bottle of Raki and fresh grapes from their own garden. Apartment was super clean and we had a great view to the sea towards Darija's family's wonderful garden. I highly recommend this accommodation for everyone!
We had the loveliest day on the sea with Luka and his gorgeous, brand new catamaran. Luka asked well in advance what would we wish from the trip and took us snorkelling to the most wonderful locations around the islands nearby Novi Vinodolski. He had prepared us a delicious lunch (baquettes + other snacks) and made sure we had everything OK. He told about the history of the places we were visiting and overall was a great company. Definitely want to experience the sailing day with Luka again. Can recommend this warmly to everybody - it's a whole family thing that your children will remember for the rest of their lives. Or why not between couples or friends!
After days by the sea we were so exhausted that didn't even manage to go to the center for a dinner. Next to the Darija's apartment was a restaurant called Restoran Vinodol that served us the best grilled squids we have ever had - nothing similar even in the best seafood restaurants in Spain or Portugal. I don't know how they do it but I would die to know. Unfortunately I don't have a picture of the famous squids but here's a picture of the prawns instead :D The restaurant is very casual, you don't need to make a reservation especially now when it's off-season.