Hi Jenny
You pay quarterly for rubbish collection and an annual tax which is like council tax only its a fraction of the cost! The previous owner will be liable for this years bill due in September so we won’t get our first bill till sept 2020 - not quite sure why but I wasn’t going to argue!! We think it was about €40 or something daft like that.
The cost of living here is low - don’t panic about these bills. When it comes to renovating you need to seek advice (whoever you use will know) as for certain types of work you have to apply for major or minor works licence - although I’m getting the impression that a lot of people ignore this and just go for it!
Personally, I would choose a house / flat over a mobile home - we camped for just over 3 months while we were looking for somewhere and heard some horror stories about living in those and the sorts of sites they’re on. If you live in the village you’ll find the locals very friendly and welcoming with a proper community feel. I would only go for a mobile home if you want to live in ‘little england’ rather than real Spain.