I visited Tappo as I got a Groupon at a good deal. The food was nice and portion sizes are what you would expect. I would not pay their full price for the food though. The service was on and off, our server was stand offish at first and got a bit warmer towards us nearer the end. It's a cute restaurant in the Distillary District and I loved the ambiance, tables are a little close together for my liking but not the worst either. I was there on a Tuesday right at 5pm when it opened and while we were the first one's there it got busy quick.
Wait times for food were also pretty good. This place is worth a visit, be nice for a date.