Peruvian restaurant
There is a Peruvian-run restaurant that serves ceviche on 27 de febrero in Santo Domingo. I think it's called Cafe Maremonte, although the sign isn't at all obvious. It's a one-storey building on the north side of the road a few buildings east of the junction with C/ Dr. Defillo. Go through the side entrance to the courtyard with a swimming pool at the back. I know nothing about Peruvian food, so I can't tell you how authentic it is, but they have a yummy barbeque on Friday evenings. I do know a tiny bit about sushi, however, having lived in Japan for a few years, so I'm looking forward to trying out this new restaurant. Thanks for the information, Chiri!