I have been to Habib's a couple of times and like the place.
The kebabs are up to snuff. One basic place everyone will want to start out at when tasting Persian cuisine is the Koobideh. If you're Persian you will know right away whether the rest of the menu items will be good and if a follow on visit is needed. If you are American (and are meat eater like me) it's a safe dish to go with. I can tell you the Koobideh at Habib's is very good. The Basmati rice served at this place is also perfect.
Don't forget the Maast-o Khiar either. It's another standard to tell you not only how they prepare the food, but also how they hold the items prepared for the day. A good Maast-o Khiar like the one served at Habib's is always a pleasure.
The Ghormeh Sabzi served was also good. I would have preferred some lamb in the stew as well. But a vegetarian Ghormeh Sabzi is always delicious stew. For you dyed in the wool American out give this dish a chance. It may look super dark green like overcooked spinach, but the flavor is definitely tasty and nothing like spinach.
For those reading this review I am not Persian. But I did fall in love with the food and now cook a wide range of Persian meals often at home. Habib is not a strictly Persian place as evidenced by having hummus on the menu. Some of the dishes are a little Americanized to bridge the gap. But I would say this a decent place to start your love affair with Persian cooking.
Though it's not on the menu you should ask for a serving of Tadig to go along with the stews. This portion of the basmati rice preparation is a great compliment to the stew.
As it's been mentioned Habib's interior does have a few failing points. And the location itself can be easy to miss when tying to find it. But remember that you came for the food and enjoy yourself.