Antonia's is run by a Columbian family. Al the wait staff speak English with a Columbian accent. It is very charming.
Antonias plates are all about $15. I thought it would be much more expensive as the ambiance is more upscale. They have 4-6 tables outside on Davis square.
I had the chicken in red sauce and I thought it was mearly so-so. The sauce was too tomatoey.
It is very romantic and a perfect spot for at date (probabaly 2nd date, you don't want to waste the heavy artillery on a first date) as the sound level is plesent, but not too quite.