Real estate is definitely not the safest option as even this market is being subject to some level of volatility. Fluctuations of a few percent might not look like a lot, but if you have like a million $$ worth of properties, and a few years later you'll see that the value dropped with like 4-5%, then it's not something you can wave off like it's nothing. It hurts. Especially when the market circumstances change dramatically to the negative side where buyers will be hard to find. And if you find *potentially* interested buyers, then you'll either need to lower the price on top of the value that dropped alread, or they'll walk out. It's a though market.
What legit investment option isn't better than leaving your money in your savings account for a poor 0.3% annual interest rate? Especially when you take inflation and the yearly wealth tax that you have to pay. People with plenty of money that purely save money without any side investments are in a big losing position. But hey, it's their decision after all.