Here’s the proofread version of your text: Downtown IX is a new, "A" category, smart office building located in the heart of the city, just a few minutes' walk from the Danube on Ipar Street. The 7-story building offers approximately 4,500 m² of office space in the constantly revitalizing District IX, near Boráros Square. Its prime location ensures easy accessibility by car and various public transportation options. The building exudes refined elegance, with a façade featuring exclusive granite cladding, glass surfaces, and marble-covered interiors. Flexible office spaces provide a comfortable working environment, while the pleasant green courtyard contributes to an inspiring atmosphere. Amenities include a restaurant, café, 24-hour reception, and high-level technical infrastructure to enhance tenant convenience.

Downtown IX is a smart, "A" category office building near the Danube, offering 4,500 m² of flexible office space with premium amenities.