Did you buy the actual unit or did you buy individual weeks for use at designated times of the year?

We were to rent from what I believe to be an owner of the entire unit. I have seen them advertised for 3-400k.
The owner of the unit we were to rent for week 4 this year does not respond and I think this new ownership issue is the reason why. We are now committed to a different unit and I am glad based on all this uncertainty and chaos. I hope the owners of weeks or the units do not get the short end.