Great location, comfortable, clean and waaaaay cheaper than the most reasonably priced Disney Hotel in Tokyo Disney. Hotel Mystays Maihama is conveniently located. It's a 10 minutes walk to Tokyo DisneySea and about 20 minutes away from Tokyo Disneyland by foot. If value is what you're looking for, this hotel would be your best bet.
As you can see from the pictures above, the view from the room ain't great. The room is kinda small, but not uncomfortably small. Here's the math in land scarce Tokyo. Small room + Small bathroom + Small TV = Small price. Hotel Mystays Maihama provides easy access to TDR. It is clean, comfortable and cheap. The 3 magical C's that I look for when traveling. If all you're looking for is a place to sleep, take a shower and are gonna spend the rest of your time in the parks, this is the place for you.