Great Service and Late Night Eats.
While in many respects, Alto's is a bit of a generic Montreal-style diner, it stands out in terms of its customer service. I've ordered in from here in years, and the staff has always been polite, courteous, competent, and efficient. Indeed, any time there's been an issue with my order, it's been rectified quickly and at no additional charge.
And while their fare certainly isn't legendary, their late-night delivery is well worth the experience when you need something greasy and comforting in the late night hours.
I'd recommend the Chicken Parmesan Sub or Burger any late-night of the week.