go with it.
I have a older motobecane mtb frame, I beat up that bike so much when I was in my teens. I will have it and it still rides really good.
I also have a coworker that has a motobecane road bike. He toured all over europe with it and he now commutes 30+ miles each way, about 5 times a day on that same bike. he says he needs a new headset and a new bottom bracket, but none of those problems has anything to do with the frame. It just came with so-so components.

Great value and reliable. go for it