Not to belabor the point but as a probate attorney I focus on clearing title after death. You have NOT cleared title by sending a letter with a death certificate. I am confident you need to file an affidavit of death of joint tenant, or similar, with the county recorder which is probably very simple to do. I would encourage you to properly clear title at some point and look into a living trust as it generally makes transfer after death significantly easier. Plus, many timeshares are just liabilities after death but having them in a trust makes it easier for the family to get rid of. At this point most timeshare companies are pretty nice, after death, and don't seek back MF's after death which can pile up for multiple years before families deal with it. However, that might not always be the case. The best long term solution is to clear a deceased person's name off the deed and get it into a trust to make it easier for your loved ones in the future. Your estate attorney should be able to handle these transactions with ease and for little cost. I realize you may be satisfied that Marriott is satisfied but long term I would encourage you to do more. Just my two cents.