FANTASTIC! Would stay here again!! Hotel is modern/clean, top-tier/friendly staff (English okay). This is a DISNEY hotel which is PERFECT for your Tokyo Disneyland and Tokyo DisneySea vacation. Hotel has many accommodations including transportation to Bayside Station (Disney Monorail), convenience store, Disney Store, Bakery, Buffet, restaurant, etc. The convenience store was well-stocked with food, snacks, drinks, toiletries, medicine (after 8am), etc. We ate a lot of meals from here similar to eating at 7-Elevens in Japan.
The Hotel is conveniently located across the street from Bayside Station (aka Monorail) which is how you get to Ikspiari (Disney Springs/Downtown Disney), Tokyo Disneyland and Tokyo DisneySea - 5 minute walk or complimentary bus transportation. We know very little Japanese and had NO issues communicating with anyone from the Hotel, Disney parks, airport, etc.
To get to the hotel from Haneda Airport, simply book a bus at the bus transportation counter at the International Terminal. We booked the 'Airport Limousine Bus' which took us directly the Hilton Tokyo Bay ($16 US dollars) - will also stop at the Tokyo Disneyland/Tokyo DisneySea, Ambassador Hotel, etc.
To get from the hotel to the Haneda Airport, you book the 'Airport Limousine Bus' at the front desk. They have buses running all day long, so you will have plenty of options. We allowed 3 hours to get to the International airport, which was sufficient.