The stay at Linda's place was excellent! Notably, Linda has very clear and effective communication, both in-person and via the directions posted throughout the house. I was there for 4 months in the Summer, and my girlfriend was the second guest for 2.5 of those months. I appreciated the fact that we could talk very openly about any issues, for example if I should shift my routine to accommodate other people. The location is great, only a ~20-minute walk to the Caltrain or shops, and even shorter by bike. As far as cleanliness goes, of course the house is shared with Linda and her family, so the common areas are a little cluttered, but the guest areas are impeccably well kept.
Overall, I would say that if you yourself are a clean, friendly, and considerate person then this is an excellent place, and you need to look no further.