The flat is nice and comfortable, and in a really convenient location 1 minute away from Istiklal avenue. All taxi drivers know the road, so they should be able to easily drive you there.
However, be warned that this is directly above a night club that works every day until 3am, and therefore there is a LOT of noise in the appartment.
Shower lacks pressure probably, so it changes from hot to cold and back to hot without the user being able to influence this at all! Lastly, you'll need to call the host to perform the check-in , which makes it a bit hard if you dont have a local phone!