Istanbul is chain of restaurants offering "authentic Turkish" food. I am afraid I can't really talk on the point of authenticity, and must leave that to someone else. However, the food offered is very much in line with other restaurants of the type I've been to, with great flavor and served in a nice atmosphere, though at what seem like rather high prices.
Dropping in on a Saturday afternoon with my friend, the place was not exceptionally busy, though a few folks including families were present. Just as well as the tables are pretty tight together. I could see it being crowded and noisy if the place is full. The ambiance is nice, though - warm colors, interesting structure, comfortable seats, and some interesting decorations and lighting that lend it an exotic, elegant feel. It might be tricky, but I suspect tables could be moved together to accommodate a decent sized group. I gather there is also patio seating though given the wind and scattered showers, it was not the best day to dine al fresco on our visit.
But anyways, the food.
I had planned to order a sandwich and appetizer on this trip, but either this branch does not serve sandwiches or it was past the time they are available because I did not see them on the menu. That was fine, though - I got an old favorite, moussaka, instead. And wow, that's some good moussaka. The ingredients blend together perfectly for a fantastic chewy texture with lots of sweet and savory flavors, with the eggplant/mozzerella/bechamel topping being the highlight. Not to knock the plentiful and flavorful meat, but it's the top part of the meal that make it work. This is served with a plate of tasty, seasoned rice and a piece of roasted tomato and pepper on a bed of creamy sauce. Like all meals, it also comes with a nice big basket of Istanbul's bread and mild, spiced dipping oil to share with your companions. The bread is seriously good stuff, with a slightly sweet taste, a crisp crust, and soft, super addictive inside. It's both a very good and very bad thing they give you such a good portion - good because it is delicious and you will want to eat it all....and bad for the very same reason.
As to drinks, Istanbul has a full bar and some interesting teas, but I decided on Turkish coffee. You can never have enough caffeine after all. However, for $3.25, you sure don't get much caffeine, even considering how pungent the Turkish style of coffee is. One little (admittedly beautiful) little cup is all you get, which seems strange since I have been to other restaurants where I can get an entire pot of coffee for less than that. ...though to be fair, they are Lebanese and not Turkish and not located in Columbus. Anyway, I suggest you try the apple tea instead, which not only has free refills, but is apparently very good (I did not try it but my friend who did said it was fantastic).
Prices, in all, do seem on the high side to me, though they aren't ridiculous or that unusual for this sort of food in this sort of atmosphere. Also, keep in mind that, as of this review, Istanbul offers a 15% off coupon (per person or per table) on their website that you can print off. It used to be offered in the local newspapers as well. My friend and I both utilized one without any difficulty.
Now as to other points - service is a bit mixed. The main server we had was.... not enthused with her job. It could also take a lot of time to get refills and other things. However, there was another man (the/an owner?) who popped in and out now and then and was very pleasant.
Also, as the place isn't that large, I expect waits are a normal occurrence come dinner time. However, there is a very nice area to wait in by the entry, with some big leather couches, reading material, and some items for sale from Karavan (same people as on High Street I presume) for perusal.
Anyway, if you're hungry at Easton, I would certainly suggest giving Istanbul a try. Good food, fantastic, bread, and a very nice atmosphere. read more