The owner-operator of a trio of bars in San Antonio’s northeastern ‘burbs plans to make his first foray into downtown San Antonio. Nick Marquez of Hidden Grove, Old Main Ice House and Bar House — all in the Schertz area — confirmed he’s about to begin converting a 93-year-old building at 820 N. Alamo St. into Bar House San Antonio. It’s located a stone’s throw from bustling nightspots Lucky Duck, Bentley’s Beer Garden and Roadmap Brewing.