He will have to use a wide-angle lens because he must take a photo of a lot of people.
This kind of lens allows you to fit and capture more in only one frame. It is often used for capturing a wide field of views such as landscapes, interiors, and others. It has a wider angle than a normal lens.
The most similar to the wide-angle lens is a fish-eye angle.
From what i see about the picture it looks like a calm Cafe, where people are relaxing. The texture of the work is also very good, I like how the room looks balanced from putting people and tables on each side.
It was designed by Dankmar Adler and Louis Sullivan and built between 1890 and 1891. It was named for local brewer, building contractor, and financier Ellis Wainwright.
