I don't have much personal experience with Bratislava prices, maybe somebody else can advise you on that.
But I guess you will be in a small, maybe 1 bedroom flat, or as mentioned above, rent a room in a shared flat.
Rents for a 1 bedroom flat range from 300 eur - 500 eur per mont, judging from a quick look on some websites.
So you're not left with too much money after that.
As for food, travel etc. hopefully somebody else can help you with that!
I would say for that salary, you're better off in a smaller, cheaper town, but that's just my opinion. 