In tourist information center you will find a large number of suggestions for excursions. Coordinates: -33.420288, -70.606854.
Read my review of useful websites to buy tickets for sightseeing tours and attractions
Bikes for rent free on bail issued passports.There is no guarantee that it works for all foreigners. Thare are usual bike rentals. The first 30 minutes are free. An hour fare 1,2 USD = 1000. CLP Terms available at the website: bikesantiago.cl
Searching for a pleasant and at the same time affordable housing is not the easiest thing in Santiago. One way is to rent apartments in the buildings (two nights). Prices are quite democratic 37,8 - 48,7 USD = 35 - 45 EUR per night for a studio. Search through the standard booking systems.
You can view prices, book accommodations and read about the pros and cons of various hotel search engines in my review of hotel and apartment reservation systems