You can try:
WebElement getmenu= driver.findElement(By.xpath("//*[@id='ui-id-2']/span[2]")); //xpath the parent
Actions act = new Actions(driver);
act.moveToElement(getmenu).perform();
Thread.sleep(3000);
WebElement clickElement= driver.findElement(By.linkText("Sofa L"));//xpath the child
act.moveToElement(clickElement).click().perform();
If you had case the web have many category, use the first method. For menu you wanted, you just need the second method.