I've been visiting this place for 5 years now, although it has undergone some ownership changes and I have remained loyal because of the consistently good quality food and friendly service.
This place was my first accidental foray into the world of Persian food and I have never regretted it. The decor isn't brilliant, its very limited as its under a railway arch but its clean and friendly.
I frequently have their mixed starter as a main course as it is very substantial, freshly made and reasonably healthy. The shish tawouq is amazing (marinated chicken done on coals) and is wonderful with the hot flat bread.
Go with an open mind and you will be very pleasantly surprised!