The best description of this hotel is - Great. It's in Daibada, a manmade island in Tokyo Bay. Three of us stayed here for 3 nights (with my 6 year old son) and it was just great. We were going to Disney Land on one of the days, and booked the free shuttle bus once we had a confirmed booking. The whole experience was pleasant and a breeze. The staff in this hotel do go out of their way to make your stay pleasant. The location was fine - we stayed in Shinjuku earlier of the trip, and wanted to stay in Daibada for the Disney Land, Lego Centre etc, so for the 4 days we were there we didn't go back to central Tokyo. There were lots to do near the hotel - 3 massive malls (Aqua City, Decks (where Lego Centre was), and Divers (gundam robot)). Lots of restaurants there too - we had the ramen theme park and Gonpachi in Aqua City, both were great. The hotel was right at the door step of the monorail. If you go to Narita, the airport limo stops right there.
Our room was a 45-square metre ocean view room, massive, awesome view, and with a balcony. Room itself was of 5 star standards. The beds were heaps more comfortable than other really hard tokyo hotel beds. Bathroom had separate shower/bath; internet was really good.
The other really good thing about the hotel was the price. Of the 3 places we stayed in this Japan trip, this somehow turned out to be the cheapest! There are heaps of good deals on the internet - if you find one that suits your budget, I suggest you go for it!
If you plan to base yourself here and explore Tokyo, it's still reasonably convienient, as it's only about 20 min on the monorail (Y310 each way), then you will be at Shinbashi, very close to Tokyo Station, Ueno (the zoo/science museum), Asakusa and Ginza.
Our other hotel, which we love too, was Century Southern Tower in Shinjuku. It will be difficult to decide which is now our favourite - but if we plan to go to Disney Land, I will go back to this hotel in a heart beat.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.