Playa de Castilnovo is generally safe for swimming, offering a long, open sandy stretch. As an undeveloped beach facing the Atlantic, conditions can vary, and it's always wise to be aware of currents and any local advisories. The water is typically clean, and the beach's natural setting provides a refreshing swimming experience, though it lacks lifeguard supervision found at more developed beaches.

To best experience Playa de Castilnovo's wilder setting and avoid crowds, visiting outside of the peak summer months (July and August) is recommended. The shoulder seasons, such as late spring (May-June) and early autumn (September-October), offer pleasant weather and significantly fewer visitors. Even during summer, arriving early in the morning or later in the afternoon can provide a more tranquil experience.

Playa de Castilnovo is located south of Conil de la Frontera. Access is typically via unpaved tracks or paths from the main road. Parking can be informal along these access routes, but it's not always clearly marked or abundant, especially during busier periods. A short walk may be required from where you park to reach the main beach area, adding to its 'hidden' feel.

As an undeveloped beach, Playa de Castilnovo has no direct food or lodging facilities. Visitors should plan to bring their own refreshments and supplies. The nearby town of Conil de la Frontera offers a wide array of restaurants, bars, and accommodation options, ranging from hotels to apartments, just a short drive away. This allows for a truly natural beach day followed by town amenities.

Playa de Castilnovo is unique for its extensive undeveloped stretch of sand, offering a truly wild and natural beach experience. Its designation as dog-friendly is a significant draw, allowing visitors to enjoy the vast open spaces with their canine companions. The lack of infrastructure and the scenic backdrop, including the historic Castilnovo tower, contribute to its distinct, untamed charm.