Went here on the basis of the TA reviews, and because it was close to my hotel. It was listed under the 'pizza' category on TA, which is interesting, since I didn't see pizza on the menu.
It was cold, dark and damp outside (seems to be a theme in Riga), but the Frog was warm and welcoming. I was greeted and given a choice of tables. My beer and the most amazing garlic bread arrived quickly and with a smile. The caramelized pork with vegetable and rice was never going to win any culinary awards, but it was hot and tasty, and filled the need. With a second beer, the whole meal was under 13 lats, which seems like a bargain to me.