Etna is amazing. It's adorable and quaint. It can also seem very romantic without being even remotely stuffy feeling. I've been here a number of times and have always been incredibly impressed.
Etna is very small, and the space seems authentically Italian. The service has always been wonderful.
The food is always amazing! Their pasta is perfectly al dente, and their ingredients are fresh, of high quality and are used flawlessly. the servings are large and incredibly affordable.
The have an excellent and affordable wine list as well.
I've been here with many people and have never heard a single complaint.
I have spent time in Italy, and some of Etna's dishes are the closest I've ever had to authentic Italian. Be sure to check it out. It's fantastic!