Can anybody explain why someone sell me an apartment in resort ?

It seems sketchy as hell.

They sell an apartment, that apartment in resort. The price is about typical normal apartment.

They said that I own that apartment, and can visit the resort few days a year, enjoying staying at that apartment. Just book your day and they handled the rest. I still not fully wrapped my head about this concept yet, but why not stay there forever but "book" ?

My aunt said this seems good deal. But I feel something fishy.

Is it a good investment compared to normal apartment in residence building ?

Can someone tell me more details on this type of real estate?