Well, I am 6'3 and 67 years old with a bad hip so my comments might not be applicable to everyone.
The directions picture shows an arrow pointing to the garage and not the steps to the right... confusing.
On arrival, we had to ascend steps a little better than a goat trail with a rope for a handrail and no lighting. Treacherous.
The bath had one of those claw tubs with high sides. Unable to use it.
They had a bit of coffee however ever no sugar or creamer. Be sure to bring your own.
The picture shows a couple of skylights... well there are 4 or 5 of them. Good luck sleeping in later than sunrise!
It is possible the foregoing would not be important to your folks?