We decided to try out this place after having it recommended by someone who had seen it online;
We had lunch on a Friday. During our lunch there was never more than one other table occupied.
The menu is on large blackboards and so you go up and order from the counter.
We ordered water and were told to help ourselves from the upright coolers.
Two of us had the lasagna. We both that it was OK but far from the best we have ever had and likely would not select it again.
During our lunch no one came to see if we wanted anything else or if there was any problem with our meal. At the end of the meal, we waited for the bill and finally I went up to the counter and paid.
So I would have to say that the food was so-so and the service was below par.
There are at least 2 and maybe 3 other Italian restaurants within sight of Tre Sorelle. We have not tried them out, but next time we likely will.