When staying at Nestor's place you are sharing his apartment which reminded me of a bachelor pad. The room we slept in was large and had everything you needed to sleep. The bathroom and kitchen however I found to be quite dirty and I felt uncomfortable even sitting down on the toilet. I felt for the money we paid to stay here compared to our room in Buenos Airies that the least Nestor could have done was either cleaned the bathroom of hired someone to clean it before we arrived.
Due to unforseen circumstances our bus was late into Santiago by 2 hours, and as were not able to contact Nestor it was lucky that he was still home and he was understanding of our predicament.
The apartment is located in a fantastic area of the city close to shops, restaurants, metro and tourist sites.
If you just need a bed for the night and don't mind the shared facilities being unclean then I would recommend staying with Nestor.