As a Puerto Rican who lived in the island for 26 years and who cook Puerto Rican food on a weekly basis, I have to say, hands down, that Millie's Cafe is a great option for those interested in authenticity. The staff is really sweet, they make you feel like home. I had their alcapurrias, mofongo and sandwich cubano, and everything was amazing. The only critique is that they don't accept credit cards. Besides that, Millie's is a great option for those who are looking for authentic flavors from the Spanish Caribbean.