There are a lot of things to do here in Pichilemu! SuperFun Chile will be your super fun hosts here, so they will give you all their favorites around town. You can take fun pictures, surf, laugh, breathe, everything except not following what the guide / instructor tell you to do in the water, for safety reasons and to prevent accidents. They adopt the "hippy fascist" leading style: just like hippies at having fun but still as strict as fascists in terms of safety. When it's safe, they go for the real SuperFun!
Besides all the fun you can have, Pichilemu is quite a city now, so you can go to nice cafes and restaurants at walking distance, go to the local market where many people from around the countryside gather, party, relax, play, chill, eat, sleep, and watch movies at the cinema. Go kayaking, biking, canopy, paintball, hiking, and storm watching. Even if you rock climb, bring your shoes because in low tide there are coastal boulder problems to be solved.
SuperFun Chile works with a local spa called Terra Bella, so you can let them know if you want to include this. It has a great quartz bed to restore your energetic body, salt water baths, massages, romantic dates with nice music and herbal aromas, better than any honeymoon you could imagine. Even if you want to visit a remote bone composer, let SuperFun Chile to tell you that he has fixed vertebras for decades and is totally careful, trusted, and safe.