The hotel is right next to the castle, which guarantees a nice view if you stay in a room on the side of the castle, but that's about it. The staff are polite and trying to be helpful but the level of English spoken is some of the worst we encountered anywhere in Japan. You would think this is a Westin, which should expect to see foreign guests. How one communicates in 'non-Japanese', I am not sure. We gave up. Trying to order food in the coffeeshop was torture. In the end someone from the bar came over, who spoke English, but then he did not know the menu and could not help. Spaghetti with mentaiko? and similar - how is one supposed to know? It would be better to explain these terms on the menu, so as not to challenge the English language skills of the staff. We actually felt bad and the staff obviously tried to avoid us. Getting their attention was almost impossible. We then decided to take the buffet, which for a Westin was really poor to say the least, but we did not come for the food. the following night, we decided to also take the buffet, so we did not have to repeat the previous night's scenario and embarrass the staff. to our surprise, the buffet items were the exact same ones as the night before. Now, that was disappointing, as the food, as it was, was very plain and gave so little choice. The trouble is, that there is nothing to eat near the hotel and nowhere to go, so although we did not go to Nagoya or to the Westin with food as a priority, it became a major disappointment.
This hotel also has no free internet access, not even in the lobby, which I thought is something given in all Westins. Here you had to pay no matter where you used it (in today's world every hostel gives this free).
And then there is the shuttle bus. You are very much dependent on this bus, as the location of the hotel is just not anywhere near anything (except the castle). It's shuttle or taxi. The shuttle bus only runs once an hour to the station and as if this wasn't stingy enough, it only starts running late in the morning - I seem to remember it was around 8.50h for the first bus. Too late for us to catch our train and too late, I would assume, for people going to an early office meeting. So it's taxi.
To be fair, while at the hotel, we only ever saw one other foreign guest, and the Japanese guests seemed to have no problem. The staff looked engaging and polite. If you are non-Japanese and have nothing to do in the area of the hotel, then you may want to consider staying elsewhere.

I recently stayed at the Westin at Nagoya Castle when I was in Nagoya for work. The staff was extremely freindly and helpful and the location next to Nagoya Castle provides great scenary. The price was also very good for Nagoya. With that said, I only can give it three stars because the wireless internet was spotty, food was mediocre, and the bed was not as comfortable when compared with other Westins. If this was a Sheraton, I would have given it four stars.

The room was tiny, but this is typical in Japan. It was well layed out. Toiletries in the room were nice and many of the items I have only seen at this Westin in Japan.

The hotel is about a 10 minute walk from the nearest subway station. Directions to the hotel on the website (Airport to Nagoya Train Station, then take a taxi) were easy to follow and the price for the taxi was accurate. SPG Platinum benefits included access to the fitness facilities, access to the executive lounge, free breakfast (either buffet or continental) and a happy hour in the lobby lounge. I only went to happy hour one night and I was the only one there, so I would not recommend it to meet other people. The executive lounge was quiet and a great place to work. Light beverages and snacks were provided, but it is only open until 6pm.

Pros
1. Staff: everyone was friendly, courteous and helpful. Staff was above average when compared with other Westins.
2. View from hotel of Nagoya Castle (ask for a room that faces the castle)
3. Price (compared with other hotels of a similar stature in Nagoya, it was reasonable, although not sure it should be a Westin)
4. Executive lounge was a great place to get work done. Wireless worked better than in room, but still an issue.

Cons
1. Wireless Internet was spotty in the room and executive lounge (frequent disconnections on four different devices - HP laptop, iPhone, iPad and Blackberry). It was reasonable fast when I got a signal. This was unbelievably frustrating since I had to work in the hotel 4-6 hours a day.
2. The food was mediocre. I ate at the restaurant in the lobby for one breakfast buffet and one dinner buffet and ordered room service once. I would not recommend the buffet because the hot dishes were luke warm and didn't taste great. I know it was a buffet, but the food was borderline cold. Room service was better, but protions were small for the price (I realize also that it is Japan).
3. The bed... I honestly do not think it was a heavenly bed. Other Westins that I have stayed at in the past had much more comfortable beds.
4. Small issue, but I could not find an iron in the room (it is listed on the website, so maybe I missed it).

This is the nicest Westin I've ever stayed at. From the outside, it doesn't look that spectacular but the moment you pull into their driveway, you're treated like royalty. The bellmen run to your vehicle and help you with your luggage immediately. The lobby is gorgeous and the rooms are very clean. We had a view facing the castle, unbelievable. We used combo SPG points and dollars, which worked out to $40/night. This came with a buffet breakfast for both of us which normally would have been $25-$30 each. The value was unbelievable. Would definitely stay again.

We had a fantastic 3 night stay with the best view of the castle from our 10th floor room. The hotel is 40 years old so the bathroom is small, but it is functional, very clean, with a bath and hand held shower over. The room is a good size. Wish there were a few more english speaking TV chanels. Breakfast was good, the free shuttle to Nagoya Station every hour - a good service. ALL Staff very friendly. Enjoyed a great meal in the restaurant on the 11th floor. We loved Nagoya and want to return, so will stay here again.