I really recomend the Temptation bar located in the Alenbi st. area. It's great fun, they have live Dj's every night, great food Home made liquers (israeli moonshine) that will give a great buzz, and most important they're open till 5 in the morning at least. and one more thing they have lady's night on sunday and women get every secon drink for free. Like I said, great fun for single guys.
Dress Code: informal
the great advantage of this place and i strongly recommend it if you visit Tel Aviv, is its observatory.
The restaurant is located in the 49 floore in the round tower of Azrieli Center.
Part of it is a restaurant and par of it is a Bar.
good food and drinks though a bit expensive, but for once to enjoy the lovely view of the city from above its recommended !
If you're going for dinner would be wise idea to book a table in advance.