There's a new house my family is potentially going to rent and I don't like it.
Is there a reason in particular that you don't like it?
Yes, because I think it's a shitty place to live in.
It's okay to not like the house, everyone has their own tastes and preferences. However, you should always be grateful for what your family is able to provide.
I don't think that it isn't the best thing for me and I'm worried about my safety living there.
If the location of the house makes you worry for your safety then it's understandable why you are reluctant to live there. I'd advise you to have a conversation with your family and express your concerns. Perhaps they'll realize things they were unaware of.