Stayed here for six nights - three were nights when we were going to Tokyo Disneyland and DisneySea. Very walkable distance to Disneysea - they offer a shuttle that runs at limited times but walking is probably faster. Whe we went to Disneyland we would walk to the station near DisneySea and catch the monorail to Disneyland, (You can use your Suica card to pay for the monorail) so for these purposes the hotel was very convenient.
The down side - only a small restaurant in the hotel with limited seating and availability for breakfast. Closest options to find anything to eat was at Lawson’s, a convenience store a short walk down the road. If wanting to eat at a restaurant, needed to walk to Ikespari, which is the equivalent of Downtown Disney with shops and restaurants. That was about 0.8 miles away, walking distance but tiring to do so after a long day. Maihama station is there in Ikespari, so we would walk there every day we were not going to Disney to catch the trains to Shibuya, Shinjuku and Harajuku.
I would say this is perfect for when you are going to the parks because it was very affordable. We were satisfied with our stay here.
Oh, and no laundromat here - we had to catch a can to the closest laundromat to wash clothes.