The rooms were cosy, clean and extremely comfortable. I don't really know how much did SIA pay for each room. The teaspoons provided in the rooms were gold plated. The Japanese tea sets in the room were also expensive looking.
The crew stayed there for less than 2 years. We were "kicked" out by the hotel so to speak because of the crew's behaviour ("kicked out" = by raising the room rates until it's outside of SIA's budget) . The crew souvenired the gold plated teaspoons and the tea sets. The hotel management complained to SIA. Actions in the form of a verbal warning was issued to the guilty crew. (the hotel kept a list of crew who souvenired the said items and sent to SIA). The hotel staff branded us as the "Ali Baba and his thieves". It was a wake up call to the cabin crew in general (of course the majority of the cabin crew were not guilty of this misconduct but the small minority of of about 10% was enough to infuriate the hotel management)
Prince Takanawa would give each crew 2 free drink coupons for the 2 day stay. The crew's favorite free drinks was the fresh Hokkaido Melon juice. Most of the crew would order the drinks until at times the hotel would run out of the melons.
After we were kicked out of Takanawa, we signed a contract with the Hilton Shinjuku which was quite a comfortable and stylish hotel. As usual, the rooms were clean and confortable. However, there was no issuance of coupon for free drinks. Nevertheless, the crew was very happy with the Japanese hospitality.