Where is San Antonio?

In the dimly lit alley behind the opulent restaurant, the rain had transformed the cobblestones into a reflective mirror, casting an ethereal glow about the scene. My attention, initially captivated by the polished elegance of my new shoes that I had  found at a reasonable price , was abruptly drawn to a shadow moving stealthily through the kitchen. Curiosity, a faithful companion, compelled me to follow.

The kitchen staff's protests fell on deaf ears as I trailed the mysterious figure through the back door. Outside, the rain continued its unrelenting patter, but my focus remained on the man. He moved with purpose, leaving a fluttering piece of paper in his wake.

As he disappeared into a waiting taxi, I retrieved the flyer. It said the grand San Antonio Hotel.  The contents promising a mystery worthy of further pursuit. Returning to the restaurant, a mishap befell me; in my haste, I slipped on the slick cobblestones, resulting in a rather regrettable tear in my trousers. A fine pair, their sacrifice would not be in vain. Once inside, I resumed my seat, savoring the rich flavors of my coffee. With a sense of anticipation, I contemplated the night's events and the research awaiting me at home. The pursuit of answers would soon begin. Where is San Antonio?