As with most things; you pays your money and takes your choice.
We used Bankinter for 16yrs without any problems. I will say it may be a little inconvenient sometimes now that the nearest branch is in Santa Pola [but nice to have a brew in the nearby square or down by the marina]. Their on-line facilities and app are very good, both having English versions. Staff in branch are well used to dealing with customers from many nationalities.
You will find examples of people having good and bad experiences wherever you look.
Hope you find a bank that suits you.
Duncan S
[Ex MedII]