Here are several Singapore hotels that advertise family suites/rooms and information about extra beds or sleeping arrangements. I’ve included brief notes on capacity and any extra‑bed / cot policies the hotels publish — always confirm availability and charges with the hotel when you book.

1. Marina Bay Sands — Sands Family Suite (and other family options)

   • Notes: Offers 1‑ and 2‑bedroom Sands Family Suites with a kids’ room (bunk beds/kid amenities). The hotel’s FAQ says an extra bed (rollaway/sofa bed) can be requested per room (charges apply) and baby cots are complimentary on request. Contact reservations to confirm exact room capacity and fees. (marinabaysands.com)

2. Shangri‑La, Singapore — Family / Deluxe Family Room (Tower Wing family floor)

   • Notes: Has dedicated family rooms and family‑floor services (Family Concierge, family pantry, play sessions). Their Deluxe Family Room is designed for 2 adults + up to 2 children (young children) and the page specifically notes that due to space limitations an extra bed cannot be accommodated — cots may be available. If you need separate bedding, they recommend booking two rooms. (Shangri-La.com)

3. Mandarin Oriental, Singapore — Family Suite / Family Theme Suite (Marina Bay)

   • Notes: Offers family suites (spacious 1‑bed suites with kitchenette and kid amenities; they have a Family Theme Suite with bunk beds). Policies on rollaway beds vary by room type — contact reservations for extra‑bed or cot availability and any fees. (mandarinoriental.com)

4. Village Hotel Sentosa (Far East Hospitality) — Family Room / Deluxe Family Room

   • Notes: Family rooms and deluxe family rooms designed for up to 4 (often configured as connecting rooms or with two beds). The property promotes family‑friendly services and states extra‑bed/extra‑person charges apply (details vary by property) — confirm the exact mattress/rollaway or cot policy when booking. (villagehotels.asia)

5. Additional widely used family‑friendly options to consider (policies vary — check with hotel):

   • The Ritz‑Carlton, Millenia Singapore — family suites and interconnecting rooms commonly available (call to confirm extra‑bed/cot rules).
   • The Fullerton Hotel / Fullerton Bay — offers suites and interconnecting rooms; some rooms accept rollaways/cots.
   • Capella Singapore (Sentosa) — family villas/suites and kid amenities; confirm extra‑bed policies.
   • ParkRoyal on Pickering / PARKROYAL COLLECTION Marina Bay — some properties offer family rooms or interconnecting rooms; extra‑bed/cot policies differ.

(For the last group I did not quote the hotel pages here — please ask if you want me to fetch and cite the exact current extra‑bed/cot policies for any of these specific hotels.)

Quick booking tips

• Always confirm: maximum permitted persons per room, whether the hotel allows a rollaway/sofa bed, cost for extra adult/child, and whether baby cots are complimentary. Policies and fees differ by room category and change over time.
• If you need two separate beds or additional sleeping space, interconnecting rooms or suites with a separate kids’ room are often easier than rollaways.
• When traveling with very young children, ask about child meal policies, kids’ programs, and whether the property provides baby equipment (sterilisers, bottle warmers, high chairs).

If you tell me your travel dates, number of adults and children (including ages), preferred neighbourhood (Marina Bay, Orchard, Sentosa, city centre), and budget range, I can look up specific room categories, current extra‑bed charges, and availability for those dates and include direct links/phone numbers.