MIMARU Tokyo Ueno Okachimachi

Hotel · Maihama, Urayasu (Chiba)

One of the most family-geared Official Hotels: bunk-bed 'Treasure Rooms', a 'Wizkids' indoor play area, kids' programs, indoor/outdoor/whirlpool pools and free kids' amenities on request. Standard rooms sleep up to 6; free shuttle to Bayside Station.

Worth knowing: Large, sprawling property; the exact occupancy of the themed Treasure Rooms is not published, so confirm bed counts when booking.

Hotel · Maihama, Urayasu (Chiba)

Official Hotel with a whole tier of story-themed 'Happy Magic Rooms' sleeping 3-6 with extra beds, an indoor pool plus seasonal garden pool, and buffet dining; free shuttle to Bayside Station.

✓ The Family Happy Magic Room Ocean is officially bookable for up to 6 guests.

Worth knowing: Bed configuration and room sizes for the Happy Magic Rooms aren't published; children aged 6+ are charged the adult rate.

Hotel · Urayasu (Chiba)

Partner Hotel with genuine multi-bed family rooms (a 4-bed Deluxe at ~36 sqm and a 5-bed Executive at ~61 sqm), a public bath, a kids' breakfast corner, plus nursing room, baby beds and potty seats; free shuttle to the Disney parks from Maihama Station.

✓ The Executive (5 beds, Terrace) is officially bookable for up to 5 guests.

Worth knowing: Not walkable to the parks or a station — you rely on the ~20-min shuttle; large public bath only, no natural onsen.