I just love eating ceviche and this place is great. It is inexpensive, has a great youthful/international vibe, and has a delicious selection of ceviches. The chicken choices are all also fabulous, and there are some good steak options too. You must make sure to check out nightly seafood specials (such as the whole grilled baby octopuses on a recent visit) which are always wonderful and interesting. I love the house margaritas, and the pisco sours. There are also some good wines by the glass. Stay away from the sangria which is too sweet.
99 First Ave (corner of 6th Street)