You have basically described every modern timeshare system. Just watch the Last Week Tonight with John Oliver segment on timeshares before making any purchase.
If you are still convinced that you want a timeshare, buying secondhand is almost always the way to go. To me, while the marketing of timeshares always sounded good, the fact that people are begging to get rid of them on secondhand sites tells me that it isn't something I want to get involved in. But to each their own, etc.