La Ocho sits by Escambron just east of Old San Juan and gives the capital a real longboard reef option. The wave breaks over reef and rock, spreads across a large area, and can suit many ability levels when small. It is not as soft as Pine Grove, but its protected setup, board-rental access, and rolling rights make it a useful longboard and progressing-beginner page when size is manageable.
Paddle from the Escambron/La Ocho side and give yourself time; the main waves break farther out than they look from shore.
Use the public parking around Luis Munoz Rivera Park, Escambron, or nearby streets. Spaces are easier early, and weekends can fill quickly.