Reservations are strongly recommended.
While there are round and rectangular tables upstairs, most tables are square, measuring about 31 inches on each side. There are both banquettes and chairs in which to sit, though standing is a bit more complicated, as there are only about 10 inches between tables.
The atmosphere at Mastro's is that of a classic, traditional steakhouse, with music throughout. The downstairs dining room plays the likes Frank Sinatra while the upstairs features live piano standards. The low lighting downstairs makes for a romantic dining experience while the entertainment upstairs makes for a festive one.
The restrooms are located on the second floor, past the bar and to the left.