Lost Sony Xperia Z3 compact mobile phone in Torrevieja

Hi there
I wonder if anyone can help. I lost my phone outside a restaurant on the beach at Torrevieja called Maria's on tuesday 8th September whilst on holiday visiting my inlaws. I rang it and spoke to a young guy who's spanish father had found it and arranged to meet him at La Zenia Boulevard that day at 4.30pm. Unfortunately it rained really hard and the road had been closed so he could not make it. We arranged to meet at 10am the next morning (wedneaday 9th september) at the same place. Sadly he did not show. If anyone knows of an english lad who was staying with his dad or visiting his dad around this time and had found a phone, please let me know as i have pictures etc on my phone that are irreplacable and am so upset that i no longer have them. This all happened in Torrevieja. Please help if you can. Thanks for reading.xx