My parents own 1/6 of an oceanfront 3 bed room on the Florida panhandle and it has been great. They bought from a previous 1/6th owner over 20 years ago and have never regretted it. Each couple pays about $200 a month for electricity, water, cable, phone, insurance, condo MF's, etc. What a deal! They get 8 or 9 weeks a year (depending on how the calendar falls) for about $2400 a year. That is about $300 a week for a 3 bed room condo ocean front condo.
With 1/6th olwnership you are guaranteed at least 2 good summer weeks. The owners drew names out of a hat years ago and said Tom week 1, Bill week 2, etc. After the 6 each had their week they started over again in the same order. You know a year or years in advance what weeks you have and they never have changed the order. If you luck out an get 4th of july or Christmas, great, but there is no complaining. Sometimes owners will swap with each other for a particular week but normally the weeks are set for now and forever in the future.
They bought in for $25000 over 20 years ago and the last person who bought in paid over $100,000 for their 1/6th. The group has rules like no pets period, no renters, any potential buyer has to be approved by a majority vote of the owners, current owners have the right to buy any week for the same price that anyone else has offered (ROFR on a small scale) , and all refurbishing or purchases have to be approved by a majority vote. Each owner leaves a check for the cleaners (they all must use the same cleaning company and can't clean it themselves) as they leave and must be out by 11 am on Sunday so the next owners can arrive no earlier than 4.
There have been some minor disagreements through the years, but only 2 owners have sold in the last 20 years, and one of those sales was purchased as a second 6th by a current owner. The hardest thing in this arrangement is getting 6 different women to agree on paint, furniture, wallpaper, appliances, etc when they replace items due to wear and tear. My parents and the other owners are getting up in years, so I hope the situation will stay good as the kids start taking over ownership. From my family's experience it is a wonderful investment and something I would gladly buy into if I could afford $100,000.