As the description says, the space is tiny... only suitable for one person (or maybe two if you're REALLY cosy :) but it suited my needs for this trip... a clean place with a more or less comfortable bed, a working shower, and working WiFi for a couple of days stay.
Check-in and check-out were easy if slightly impersonal (I never had any direct contact with the owner). You get a message with arrival directions and a code to unlock the door.
The location is good if you want quick access to the freeway and nearby F&B establishments. I arrived and left on foot to the Sunnyvale Caltrain station... about a 15-minute walk to/ from the property. Murphy Street near the station is a historic district and has a lot of nice coffee shops, pubs, restaurants, etc.
A few minor negatives, and they really are only minor: (1) the apartment is part of a house that is lived in and the walls are thin... I heard people talking in the house late at night; (2) the bathroom fan is LOUD like a Boeing 777 engine; (3) the entrance is right outside the next-door neighbor's kitchen window and you are bound to see each other sometimes when going in or out.
Overall it was good... I would stay there again for a short visit and would recommend it as well... just read the description and reviews carefully and make sure it meets your specific needs before you book.