I have also just got back and do try and find somewhere different to try each time, I thought all 3 resorts were very busy (much busier than May and last Sept), here are my findings, for brekkie Ocean Drive, Cafe Arena, Pilgrims and Bar Sangria, ones to avoid (in my opinion !!) Scoobys and Francys Bar.
For daytime snacks El Timon, Barcelo Hotel, Oasis, and Jessies by the beach in Los Gigs, La Plaza in Arena, we tried Via Brazil and it was the worst snack of the hols, an earlier thread recommended this but we thought it was awful even though the staff were lovely the food was not. Also the two Canarian places on Spanish Corner, whose names escape me at the mo - lovely setting and nice food.
For evening we had good meals in all of the following, El Pescador in Los Gigs, Juan Llanas in Playa Arena, Barco de Nino in Santiago (beside Barcelo Hotel), Fishermans Inn in Santiago, the Wine Bar in Los Gigs, Little Italy (for pizzas) El Meson and finally Harbour Lites on the Marina. The ones I didn't enjoy were 1976 Bar n Grill and Juan Carlos was just mediocre despite all of the hype (sorry all fans).
I feel the problem with a lot of the eateries is that they are not consistent, they can change from month to month. I have been visiting for donkeys years and the one that is always consistent for me (even though it may not be the best food) is Pescador in Los Gigs. This time around my fave was Juan LLanas in Arena and Barco De Nino.
I'm now on my 170th diet of the year !!