MVN Athens rental yield promises are misleading

Did some research on MVN Athens, and honestly, the projected rental income figures seem way off. I'm based in Dubai, so I can't do a site inspection myself, but what are people actually getting for a 1BHK there? The brochures promise high yields, but property managers are quoting much lower. This discrepancy significantly impacts my ROI. Is anyone facing similar issues with MVN Athens on rental yields or resale liquidity? What's the secondary market truly like for these units? Need to understand the real picture.