If I were you I would budget for 50E a day, that includes a bed and food and a little sight seeing. This does not include any clubs or bars.
75E a day for a bed, food ( some eat out), sight seeing and a few drinks in the evening.
100E a day for bed, eat out food, sight seeing and nights at the bar/club
( a night at a club can cost 100E on its own if your not careful)