Well, you better not choose Riga (capital of Latvia) then. According to my back-of the napkin calculations, an 80 000 EUR investment will pay itself back in 10 to 15 years.
I had in mind Tbilisi (capital of Georgia) and maybe Berlin (if you prefer west). But it's not about getting investment back in money - it is more like having a real passive income plus you're the owner of real estate. And you can sell it anytime later (for much better price) if you want.