I'm considering a Timeshare?

I'd like to hear some feedback on TimeShares, more specifically Marriott type quality. I'm not a fan of hotel rooms on vacation as I stay in hotels almost every week for business (Marriots typically). I'm looking for some feedback. I'm thinking I would finance it with an equity loan (or partial cash). Seller financing has some perks but I'm still trying to figure out the tradeoffs. Any comments are appreciated. I'm still in the consideration stage.