This chapel is a hidden gem in Madrid, offering a unique and tranquil experience for visitors. The chapel's quality and attention to detail are evident in its beautifully maintained interior and exterior. The Real, Most Illustrious and Primitive Congregation of San Isidro of the Natives of Madrid takes great care to preserve the chapel's history and significance. The chapel's opening hours are limited, but it is open on the third Saturdays of the month and May 15th, making it a special and memorable experience for those who visit. The chapel's uniqueness and charm make it a must-visit for anyone interested in art, culture, and history. However, visitors should be aware that the chapel is located in a residential area and access can be restricted at times. The chapel's management has a bit of an issue with the accuracy of their opening hours being advertised, which may be confusing for some visitors.