I stayed at Javier's apartment for one month (March 2014) due to a business trip.

The studio/apartments is small but comfortable, with all the basic things to make a comfortable staying. UNBEATABLE price/quality relation in Santiago.

Pros:
-The host is very kind, great man. He helped us and give us city tips.
-Good internet broad band connection, this was crucial because of my job.
-Very confortable bed, this could be a issue when you stay in hostels, B&B etc in south america. Not this case.
-Security 24 hours, basic services in 10 blocks around (food, minimarkets, drugstores, restaurants, cafés).
-Common laundry room, pool, bike parking area.

Cons:
-The kitchen was small so if you love cooking could be little issue. No gas or electric oven to bake a pizza or roast some meat. Microwave oven available.
-10 minutes walk from the nearest subway station could be an issue if you have to go out more than once in a day. Not an issue if you are on vacations with lot spare time.

Neightbourhood tips:
-Buy some pizza at Santa Isabel with San Isidro.
-Formato Café has a great attention, is kind of a homely Starbucks with internet, sofas, etc