I probably like this restaurant a bit better than Spuntinis - only because their pasta, I find, is better. However, this is probably not the greatest way to pass judgement since I've eaten at Spuntinis multiple times while I've only been to Sotto Sotto once.
I went with a girlfriend of mine. Real simple review:
1. The bread was good
2. The pasta was really good
3. The service was meh - our waitress was a bit snooty for my liking.
4. The ambiance was good/romantic/dark-lit
5. I felt congested in there. Short ceilings.
6. Lots of noise, so if you're looking for a super romantic quiet dinner don't go here. But it's okay for a fun date night or girl's night.
I wouldn't mind going back. But I wouldn't mind if I never returned.