Absolute high quality shisha.
Good coal and tobacco (eg Starbuzz, Al Fakher - which are the best in my opinion).
Nice music (important: it is not too loud, you can still talk).
I agree with Andy G - great prices for drinks.
For me, the shisha quality is the most important aspect of a shisha bar - that means 5/5 stars !
The location has several nice details like the iron man figure on the wall, but it could be a little more cosy, for example with some comfortable couches (this is why I chose it is more enjoyable with friends and not partner). Benches and chairs are ok, yet not more.
Second aspect, where I again agree with Andy G, is size - it gets crowded too fast.
This means coming with more than one friend spontaneously might be hard.