I've had the chance to come here for the full sit down dinner and simply for drinks. Have yet to be disappointed.
Food : very good greek food. We were a group, so we ordered several items and shared. I'm a pretty big fan of saganaki (some sort of fried cheese), and it was on point here. The loukaniko was amazing and I definitely recommend it. The zucchini platter was also great and so was the octopus. The tzatziki was rich and thick (which is awesome). I don't have anything negative to say about the food at Mythos.
Service : the staff is very friendly and efficient. Our waiter was a little clumsy, but it was all fun and jokes.
Decor/ambiance : it's in a basement, exposed brick, lots of untouched character- which is great. They have live performers that actually know how to play the instruments and/or sing. Kudos.
*expect the noise level to be high.