Safe and affordable place to park a car for a week

After having my car broken into last year, I’m a tad nervous leaving my car abandoned on the side of the road for a week whilst I visit family abroad.

Is there any parking in city centre that’s affordable, has CCTV or a barrier, and would allow me to leave a car there that long? Or is that a pipe dream 😂

I took a look at the train station parking but either I’m using the website wrong or it’s roughly £200 to park for a week. :,)