Andreas and Helen are fantastic hosts. They know exactly when to leave you alone and when to come offer assistance. They were very proactive in bringing in new amenities - a new mattress, coffee maker, etc. - and themselves offered to do laundry for me.
The location is fantastic. Quiet neighborhood. 30 minute walk or 10 minute cycle (you can borrow one from them) to California Avenue with a bunch of restaurants. 3 minute walk to a grocery store. 10 minute drive to Palo Alto downtown.
The room is attached to the main house but the connecting door is always closed giving you all the privacy you need. There is a study table for work and comfy chair + ottoman for TV. The kitchen is well stocked with a microwave, oven, and refrigerator but there is no cooking stove. The bathroom is clean and very well stocked. The entire unit was recently made so has great finish.
Few things to be aware of. There are ants (black & small) which can be a nuisance so be careful with trash and food. Thankfully they have a nice orange spray which smells good and kills them all. The Caltrain line is literally right behind the house and if the doors are open, the noise can be a bit much. But with doors shut, it is entirely livable. After a couple of days, it is not something that registers. Also, there are barely any trains at night so is quiet.
The bed was a bit soft for especially because I am a big guy. If there are two people staying, that might be an issue.
Overall, loved the place and my stay. 100% recommended and will definitely be back here.