Living in Benidorm

I have a long leasehold on an old town house in the old town Benidorm, I will be renovating this shortly. I will still be working in the UK and so wish to stay registered for tax etc in the UK until I retire in 5 years time when I intend to move over permanently. I currently work one week on and one week off and so as I understand it I will be able to stay a UK resident, but maybe I am wrong?

I am currently learning spanish, god it's hard at 50 to be back at school!

What I would like is some help regarding fixed costs, local taxes, electric, water, internet etc and what as a non resident, I would be required to pay.

I would be really grateful for any help and advice and I was wondering if the local town hall would be a good place to start, does anyone have experience of dealing with local officials and how helpful they are to non residents.

Thanks in advance for your help.

Alan