I don't know. I want to agree with you, but a large part of the economic growth in Poland is off-shoring and cheap tax (~12% on contract) for tech workers. The average tech wage there now is pretty similar to the UK, and I don't really see many startups there - probably in part because of how bureaucratic their business system can be. I don't know if this influx of foreign money from off-shoring and surge in real estate pricing is sustainable or good in the long run.
Other than a massive influx of overdevelopment of flats in the cities (sometimes too rushed, I've seen reports of flat blocks subsiding because of cutting corners), I'm not sure where else the increase it.