i Have seen it happen to my neighbor in the USA, flooded her house first floor very quickly, and she was home. She didn’t know about the shut off valve. She called me first, and not her husband, because she knew I fixed things. I have been a handyman for almost 50 years, I wouldn’t install a new washer without the top of the line washer hoses. The hoses sometimes have movement depending on the pressure and your washer, so there is actually wear and tear happening every time you do a load. If you know where an isolation valve is inside your condo, and it’s easy to get at, it wouldn’t hurt to turn that off when leaving for awhile. And if you google washer hose and insurance you might see some other stories. Sometimes it’s good to worry!