Benjamin is an amazing host and his apartment is very nice. Everything worked great during my nearly 2 month stay at his place. The shower and hot water turns on automatically, which is not normal in most places in Santiago, and the kitchen is very well-equipped. He was always available in case something came up and I needed to contact him. For example, at one point his TV suddenly blew a fuse and died for no reason, and he immediately went out and bought a smart TV that next day and installed it.
The apartment building itself is nice and modern. The elevators are nice and quick, there is a swimming pool and barbecue area on the roof (the latter of which you must reserve ahead of time), and a beautiful view on the roof (and also a pretty view of the city from Benjamin's balcony in the apartment). Washing and drying works quite well, and the building is in a very safe gated little passageway that also has a coffee shop, small market, sushi restaurant, and pizza parlor which delivers to the apartments. Also, the building is located in the center of downtown Santiago and you can get pretty much everywhere from the subway or just walking.
I highly recommend a stay at Benjamin's place!