Complex sentence: Even though it doesn't cover a large area it has its own train station, Selhurst railway station which serves frequent trains to London Victoria and south of East Croydon and West Croydon.
Split into simpler sentences: Even though it doesn't cover a large area it has its own train station, Selhurst railway station. Which serves frequent trains to London Victoria and south of East Croydon and West Croydon.