I had a great time staying at Carlos' place in Santa Clara. The room is comfortable and clean, the neighbourhood very calm thus one can get a good night sleep even with a heavy jetlag. The house is easy to find and quite accessible even with public transport. I had to commute daily to downtown San Jose and I still found the location to be quite practical.
Carlos is a very kind and friendly host. He is easy to communicate with and helpful when needed. All in all, I highly recommend his room and him as a host and would surely visit again should my plans take me back to San Jose.