I was actually considering Lublin for the 6 year medical program. But I decided to go to Poznan instead. All of what i know about it, is based of my phone interview with the man there.
Its a pretty small town, not nearly as big as Krakow is, so it provides for a slightly better study enviroment. The only main concern I had was that the school was affiliated with the agent Hope Medical, which seems to be well known for conning people out of their money.
The school itself is great for the most part. Just watch out for the agents.