Restaurant recommendation is needed (Vienna)

Hi there,

My friend and I are planning to visit Vienna for a short while on my friend's Birthday. I would like to ask for advice in regard to the restaurants for BD dinner with a nice view and maybe even live music and of course delicious food. It will be a surprise dinner so I read some reviews on restaurants like Restaurant 57, Das Schick, Das Loft but opinions are so different...Some people say they are best and some people say it is not worth of the money... Could you please advice some place in order to make this day special?

Thank you a lot,
Viktorija