An Argentine friend of mine bought into one of these I don't know how many years back. Every time we got together for coffee it was the same stressful story of this apartment and how they raised the payments every few months or so...more than the agreed and signed payment plan. They would basically say, "Well, if you can't pay, you can just sell the investment." She told me she had credit card debt because of it, that her mom had to help her out because the payments became more than she could handle, and so now whenever it eventually gets finished she and her Mom will own it together, which wasn't the initial plan. I agree that they are tempting, but because of all the other reasons already stated, I would just never choose to invest my money in one. Let us know how it goes.
