I ate here twice for lunch whilst staying in Japan in March 2013. I found the location was very convenient for shopping in Ginza and the staff were very helpful and welcoming. I found it very easily following the map on the Ain Soph website, which I printed off. It was on a main road and you go in the side door (not up the exterior staircase). Both visits, I sat upstairs in the same seat! It was quite busy both times.
I went on a Sunday for lunch and had a set meal, which was salad to start, followed by tomato soup, rice and some chargrilled veggies which were cold. I also had a tea and selection of desserts. The salad was lovely - it came in a tall glass with some crudités on top. You were given a dip, made of vegan melted cheese (which I had never had before, and I was licking the bowl clean it was so good!), and a dressing. The soup made a nice change from miso, and the rice was nice but the vegetables were nothing special. The tea was full of flowers and was quite sweet and flavoursome, and the desserts were delicious - a piece of cake and a scoop of ice cream.
I then went back for lunch on a weekday and the same lunch offers were not available. I had the salad, which I thoroughly enjoyed again, followed by a Hayashi Rice plate, which was a tomato based stew - very delicious! I had a small sweet, of matcha cake and tea.
The restaurant had a very calm feel and was spotlessly clean. Being on the top floor meant service was a tiny bit slower, as the waitresses didn't see when you finished, but I was in no hurry and it was still fast by Western standards.
They have a small selection of cakes and donuts to take out. I didn't try any, but the donuts looked a bit dry.
It was quite expensive, but probably not for this part of Tokyo, and it was all fresh and healthy and very filling.Pros: Great location, Friendly and helpful staff, Delicious food!