Good idea.

But may not easy to do ---- If it is that easy to make money, why others do not do it? (for example, in "让房产公司代管", instead of helping you, why the 房产公司 they do not do it themselves?

Not to discourage you, but I think "客流量大的风景点附近投资这样的房子" is hard. Just like to find a good undervalued stock.