Noc is in the accusative case, right?
declension of noc
How about "Podoba Ci się noc?"
I think it is correct, but even better would be "podoba ci się ta noc?", about THE night- one specific.
Could you say "Czy ty lubisz noc?" or something like that?
Yes, although 'ty' is redundant.
Is this just about night in general, or about one specific night?
I'd say it is about night in general. I do not think one can "lubić" one specific night.
Tak, ponieważ śpię. :)