The best Japanese Izakaya Place that I know of on the Upper West Side is Sun Chan.. Place is really solid.. Get the grilled Saury, Grilled Rice Balls, great Chicken Wings, Wasabi Octopus, they have unfiltered sake selections. Its in the 90's but if you are up there, its worth it..
I like Dan. I particularly like their Yakisoba and the bento box lunches are a fine deal. I do agree the sushi may be the weakest part of the menu but their other itmes, like the noodles, are good. It's been there for so many years and I've never been disappointed.
It is fairly standard Japanese/sushi. Nothing special, not bad. Good for after a movie. I wouldn't go out of my way to go there. Haven't been in a while but I think I recall that some of the noodle dishes are interesting. I think the sushi was the weakest part of the menu.