The phrase "in the porch that is called Solomon's" makes it clear that they were not inside the temple where only the priests were allowed to enter. Here the words "us" and "we" refer to Peter and John but not to the crowd to whom Peter is talking. (See: [[rc://en/ta/man/jit/figs-exclusive]])
"Solomon's Porch." This was a covered walkway that consisted of rows of pillars that supported a roof, and which people named after king Solomon. It was in the temple courtyard.