@Michael Molnar , just curious? Why go in with relatives? For the capital?
I just closed on my 3rd vacation rental, this past Monday, and have been diligently working to get things ready for this summer. I should be wrapping things up by Sunday. My other two places are booked solid, and I'm hoping that this one will follow suit. I actually bought my second vacation home in 2009, which was a foreclosure. It was a lakefront home, in terrible shape. I ended up basically knocking it down and rebuilding it. It is now my showcase property, and I have had many return guests since then. What I was quickly reminded of, this week, is how much it actually costs to get things "vacation rental" ready. Aside from the downpayment for the property, make sure that you have budgeted for all of the furnishings that will be needed before you can book your first guests, i.e. beds, sheets, pillows, furniture, TV(s), kitchen utensils, vacuum, BBQ grill, picnic table, appliances, etc. It's amazing how many things are needed for a vacation rental property.
Make sure that you also follow the rules with owning a vacation rental. The common misconception, is that you can just use the property and rent it while you are not there. Theoretically, that is true, but the IRS would disagree. Your stay at your own homes, is essentially income, and "should" be reported as your property is operating as a business. Your state may also require you to register for, collect and pay Use Tax.
I look forward to hearing about your adventure. It can be a lot of work, but it is also rewarding and has many benefits.