Me and my gf stayed here for around 2 months.
The place is new and clean, exactly the same as depicted in the pictures, Julia actively maintains the place including the rooms and the private bathroom. The neighborhood is extremely safe and beautiful, you'd be intrigued to take a stroll whenever the sun shows up.
Julia was to us, the angel of Millbrae, as she helped us a lot not only on the stay, but also on the many problems and needs we had, she's actually one of the nicest person I've met!
We loved our stay and actually would love to stay longer if we could!
The only downside is that it would be suggested to have a car to do most things, as the closest grocery store or bus station would take a 25 minute walk. Julia was nice to offer giving us a lift when we couldn't.

There's also a super cute dog that will become real friendly after a month's stay, a bonus for long-term stays!