That does look like a very clean & presentable car, especially the interior. It's rare to find one so clean. I'm not sure about safety or emissions regulations in Greece, I'd recommend a professional pre-purchase inspection unless you're a pretty competent mechanic.
The weakest point on these cars is the cooling system; ask when the water pump, expansion tank and radiator were last changed. If the coolant level is low, or you find some goo under the oil fill cap, be sure to get a pressure test done on the cooling system. Cam chain can also cause problems, so it's good to see that he's refitted new cam gears and chain.
Otherwise they're straight-up E30 fun. Same problems that they all have - worn out suspension bushes, weak struts, cracked dashboards.