Affordable Living in the Heart of Harlingen, TX - Posada Del Sol, Lot M24 Welcome home! Nestled in the welcoming Posada Del Sol community in sunny Harlingen, Texas. Whether you're looking to own or rent, we have a flexible option to fit your budget and lifestyle. Straight Rental - Simple & Stress-Free. While most local RV parks sit alongside busy roads and urban development, Posada Del Sol is tucked away at the end of a quiet country road, completely surrounded by lush endemic trees right on the banks of the Arroyo Colorado River. Cash buyers welcome! An RTO Option is available at $18,000 with $4000 down.