If you like it, it's your size, and it's in good shape, go for it. The headset, bottom bracket, and stem/handlebar are the French sized/threaded parts you might've been warned about, and if they don't need to be replaced, then you won't have to face the potential cost and hassle of sourcing French parts.

With any old bike, French or not, there are a few things to check or be aware of. For one, make sure the stem and seatpost aren't stuck. If they are, walk away. It can be a huge hassle to free s stuck stem or post.

Also, be aware this bike has a cottered crankset. You'll need to press the cotters out of each crank arm to remove the crank arms to disassemble, clean, and re-grease the bottom bracket. Then you'll need to press those cotters back in. There's a special tool (cotter press) for installing and removing cotters. Without the tool, it takes some ingenuity to work on a cottered crankset. And if the cotters get damaged, finding replacements and filing them to fit may turn out to be a learning process.