I did, in Bratislava few years ago. Staff of Classics dept. are very nice. I left, though, I was bored there, thanks to Textkit I recommend, but Trnava is cheaper in terms of living costs (accomodation, fodod, etc.).
Well I think I'd prefer Bratislava to Trnava if I'm accepted to both. I doubt I'll be bored, in fact that concept is alien to me. Trnava however seems more appealing to me because I live in a small town and won't go through too much change. But on the other hand I want to live in a city like Bratislava for the experience and the opportunities.
Science does not smile on those who neglect the ancients.