There is no hotel called Marandio, the name is Marandino, you need to merge these reviews with the ones listed under Hotel Marandino, it is the same thing.
Having said that, this is a good hotel, close to the center of the city ( a 20 minute walk). It is clean, the staff is friendly and breakfast is very good. Heating and air conditioning works. You can walk to the center of the city, it is a pleasant 20 minute walk, but I was a little scared walking by myself at night, better take a taxi.
It is a business hotel and Rancagua is a business city.