The short answer.
- Register every guest and separately record who needs supplied bedding.
- A five- or six-person category can mix ordinary beds, futons and a sofa sleeping place.
- A third sharing child or a changed party needs explicit confirmation for the exact category.
A property example for this guide.
MIMARU Tokyo Shinjuku West is one of the room profiles linked below. This photo shows the property, not a verified room layout or equipment.
Start with everyone travelling, then decide who needs bedding.
For five or six people, a missing name in the search can produce a convincing result for the wrong party. Write down every guest, their age at check-in and whether they need their own sleeping place. Include the baby and the child who will share. You are asking two different questions: will the hotel accept this whole group, and does the booked category provide the bedding your group intends to use?
“Family of five” can mean two adults and three teenagers, or two adults and three very young children. Those parties may need different categories even at the same property. Start with the number of people who require supplied bedding; treat any permission to share as a separate confirmation. A larger room photograph cannot supply a missing fifth mattress.
Use a named-person worksheet for the fifth and sixth places.
The useful worksheet gives each person a row, rather than making one general note saying “children.” Fill it in before opening room offers. For a hypothetical two-parent family with children aged 14, 10 and 8, the starting requirement is five separate sleeping places. If a grandparent joins, it becomes six. Neither case depends on a young-child sharing exception.
For younger children, record what you actually want. A child who qualifies to share may still need separate bedding because that is your family’s chosen arrangement. Ask how to enter that child in the booking system; an age field alone may not express the bedding request.
| Party example | Starting sleeping plan | Question to resolve |
|---|---|---|
| 2 parents + children aged 14, 10, 8 | Five supplied places | Does the exact category provide all five? |
| 3 adults + children aged 12, 9, 7 | Six supplied places | Who accepts a futon or a sofa sleeping place? |
| 2 parents + children aged 4, 3, 1 | Record each child’s intended place | How many sharing children are permitted, and how is the third entered? |
Compare actual five- and six-person categories.
The examples below have explicit inventories. “Five” and “six” refer here to the listed bedded capacity, not a promise that every arrangement of extra sharing children is accepted. The booking confirmation still needs to cover your named party.
The Shinjuku category’s heading says One-Bedroom, while its inventory labels it Studio. Its bedroom separation remains unconfirmed. Choose it for the published bedding only until the hotel resolves that conflict.
| Official category | Area and bedded capacity | Published sleeping inventory |
|---|---|---|
| MONday Apart Ueno Shin Okachimachi — Deluxe Japanese (5 people) | 42 m²; 5 | 2 single beds + 3 futons |
| Same property — Deluxe Japanese (6 people) | 42 m²; 6 | 2 single beds + 1 sofa bed + 3 futons |
| MIMARU Tokyo Shinjuku West — Superior One-Bedroom Apartment(6 Single-Beds) | 58 m²; 6 | 6 single beds |
Published facts: MONday: five-person Deluxe Japanese room gallery · MONday: six-person Deluxe Japanese room gallery · MIMARU Shinjuku West: six-single inventory and category labels
A third young child needs an answer, even when two may share.
MONday’s official booking notice limits free bed-sharing to two children per room and one per adult and bed. It uses both “under 6” and “6 and under”; confirm eligibility at age six. Separate bedding is charged at adult rates.
Consider the hypothetical family with two parents and three young children. Entering only two children to fit a search limit leaves the third unaccounted for. Ask the hotel how to register the whole party and what bedding or category the third child requires. Do not translate a charge rule into an automatic right to add a mattress to a smaller room.
The six-person MONday room detail distinguishes six adult places from up to two sharing guests. That distinction explains why a total-headcount number can exceed the supplied sleeping places. It does not remove the sharing conditions or establish approval for your children’s ages.
Published facts: MONday official booking engine: child-sharing conditions · MONday six-person room detail: occupancy and futon preparation
Choose the mix of beds before choosing the neighbourhood.
Assign the ordinary beds, futons and sofa sleeping place by name. If two people refuse a floor futon, an inventory with only two ordinary beds may fail your plan despite having enough total places. Resolve those preferences now; changing an allocation after check-in cannot create another regular bed.
The official MONday room detail says guests prepare the futons themselves. Think through arrival: who will make them up, where bags go during preparation, and whether the space used for bedding has another job earlier in the evening. Ask for the arrangement with every sleeping place in use, rather than judging only a daytime room photograph.
On several nights, the work repeats. Decide whether you will put bedding away to use the room during the day and ask how it is stored. For a short stay dominated by sightseeing, accepting different sleeping surfaces may be straightforward. For a stay with afternoons indoors, the daytime arrangement deserves more attention.
Published facts: MONday six-person room detail: occupancy and futon preparation
Check the room after the extra sleeping places are opened.
A floor-area figure covers more than the place where people sleep. It includes fixed facilities and circulation. Five or six people also bring more shoes, bags and chargers. Request a plan or written description showing all supplied bedding prepared and identify the route from each sleeping place to the toilet and entrance.
Use this check to compare a six-single arrangement with a mixed arrangement without pretending we have measured either room. Keep answers specific to the category being offered. If a provider has abbreviated the room name, send that exact offer to the hotel.
Save a confirmation that still works after a booking change.
Send the complete party, ages and sleeping allocation with the exact category name: “We are two adults and three children aged [ages]. Each person needs their own supplied sleeping place. Please confirm this category accepts all five and describe the bedding provided.” For six people, list the sixth person explicitly. Add any intended sharing instead of leaving the hotel to infer it.
Save the answer alongside the room name and rate conditions. If a person joins, a child’s age is corrected or the category changes, obtain an updated answer. A previous approval for five people does not settle a six-person reservation. Compare the full-stay quotes only after both offers cover the same party and the same bedding needs.
Questions families ask.
Can a family of five book a four-person room if the youngest child shares?
Only if the hotel confirms the full party is permitted and your intended sharing arrangement meets its rules. Enter every child; do not assume the fifth person is an automatic exception.
Does six-person capacity mean six ordinary beds?
No. Read the inventory and allocate the sleeping surfaces by name. A category may use futons or a sofa for some of its supplied places.
What if the booking site will not let me enter the third child?
Contact the property with all ages and the exact offer. Ask how to register the complete party and which category supplies the required bedding before committing to that rate.
Sources and scope.
- MONday: five-person Deluxe Japanese room gallery
- MONday: six-person Deluxe Japanese room gallery
- MIMARU Shinjuku West: six-single inventory and category labels
- MONday official booking engine: child-sharing conditions
- MONday six-person room detail: occupancy and futon preparation
Hotel and transport conditions can change. This is a planning guide based on published information, not a promise of availability or a report of a personal hotel stay.
Ready to choose a room?
Compare our researched room profiles, then check your dates and guest ages on the booking page.