The core framework is SUITE CAPACITY FIREWALL. Prestige Suite and Kids Suite can look similarly large, yet their occupancy contracts are different. A party of two adults and two children is not the same booking problem as three adults and one child.
“Four people” is not a sufficient search condition
The source records Prestige Suite as a three-person adult-oriented product, with only limited infant allowance, while Kids Suite is structured for two adults plus two children. If the party is three adults plus one child, the Kids Suite rules do not fit. Enter adult and child ages before comparing any prices.
Same apparent size, different sleeping contract
Prestige and Kids products can share a similar published size while using different bed layouts and occupancy caps. Do not use square metres as a shortcut for legal capacity.
Lock the exact property: Resort and Primo are neighbors, not the same hotel
The Siena Resort uses 158-8 Yongheung-ro 66beon-gil. The Siena Primo is the neighboring 158-7 property. Similar branding and cross-use benefits make it easy to mix room information or package rules. Confirm the address and exact OTA entity first.
Pool and breakfast only matter after the room is legal
Once the party fits a valid room product, compare pool access, breakfast coverage and any package inclusions. A lower rate that excludes one traveler or uses a different entitlement is not a cheaper version of the same stay.
Compare exact-property contracts only
Booking.com — The Siena Resort
Fix dates, all adult and child ages, exact suite, legal occupancy, breakfast, package inclusions and cancellation before comparing the final total.
Final decision
The Siena Resort works best when your party maps cleanly to a legal suite and you will actually use the resort facilities. Do not let a large suite photo or floor-area figure persuade you before the adult-child occupancy rules are solved.