Used 000webhost back in ye olde days. Back then it was the only legit free host, and others were data scams, or so it seemed anyway, because the computer antivirus (old Avast) could go into a meltdown once you visited their websites. Looks like the times have changed – but I’d keep tenacious about my personal data around most of these companies. If they don’t make money with hosting, it’s anyone’s guess how they make that money..:)
Many services offer a low "starting price," but require you to prepay for two or three years of service to get that price. After the promotional period, the renewal price for some services can be two, three, or even four times the initial promotional pricing. While the initial deal might be incredible, the cost of transferring your site (or paying the added fee) in a couple of years may be something to consider.