There are many places in Old San Juan to grab an elegant dinner, but Aguaviva has to be close to the top. The menu is seafood-centric and they most certainly have the best ceviche in the old city center.
We tried the sampler platter with two types of ceviche and they both impressed. The pulpo (octopus) and pimento peppers was delicious, but the ceviche with white fish, mango, and cilantro was a real winner. The fried and smashed plantains (tostones) were a perfect compliment to the ceviche.