Originally, we were booked at Crown Plaza right by the station using our points, we cancelled and booked at Mitzu because it was new and I would like to try this brand of hotel. I am glad I did, we booked a corner room which gave us a lot of room for 2 people. We booked the twin room so we have two full size bed. It was comfortable for 2 of us.
Bathroom was decent size and they provided you with all the toiletries, toothbrush, toothpaste, brush, Qtip, cotton ball and etc.
From the Kanazawa station you can take the bus and it stops about 200 ft from the hotel, or take a taxi from the station. Bus was $200 yen per person and taxi for us was around $900 depends on traffic. We used the taxi since the saving is marginal because there were 4 of us.
The castle and garden is about 15 mins walk from the hotel, it is slightly behind the hotel. You walked through a neighborhood which is very quaint and quiet. Hotel can provide you a map.