Here are Singapore hotels known for spacious family suites / family rooms (across Marina Bay, Orchard and Sentosa), with a short note on what makes them family-friendly and an official source for details:

• Marina Bay Sands (Marina Bay) — Sands Family Suite / Paiza Family Suite: 1–2‑bedroom family suites with kids’ rooms or bunk beds, kitchen/kitchenette options, kids’ entertainment packs and family-oriented inclusions. Great if you want central Marina Bay location + large suite options. (marinabaysands.com)

• Shangri‑La, Singapore (Tanglin / Orchard fringe) — themed Family Suites and Deluxe Family Rooms: several themed family suites (castle/safari/space/treetop) with dedicated family concierge, family pantry and kids’ play perks. Strong for resort-like grounds and on-site kids’ facilities. (shangri-la.com)

• Mandarin Oriental, Singapore (Marina Bay) — Family Theme Suite (approx. 82 m²): one‑bedroom family suites with separate living area, kitchenette/laundry, themed bunk bed for kids and kid amenities. Good mix of space and Marina Bay views. (mandarinoriental.com)

• The Ritz‑Carlton, Millenia Singapore (Marina Bay) — Two‑Bedroom Millenia Suite (≈153 m²) and family room options: large two‑bedroom suites with separate living/dining, Ritz Kids programme and family activity options. Excellent for large families wanting luxury and lots of space. (ritzcarlton.com)

• Conrad Singapore Marina Bay — Two‑Bedroom Family Suite (≈103 m²): two king bedrooms, living area and executive lounge access — a roomy hotel option in Marina Bay for families. (hilton.com)

• Pan Pacific / PARKROYAL COLLECTION Marina Bay (Marina Bay / City) — Urban Jungle Suite & Family Rooms (two‑ and three‑bedroom / interconnecting options, ~63–99 m² and themed family suites ~79 m²): family‑themed suites (in partnership with Kiztopia), indoor play area and interconnecting rooms ideal for families. (panpacific.com)

• Capella Singapore (Sentosa) — Two‑/Three‑Bedroom Residences, Villas & Manors (from ~170 m² to large manors): multi‑bedroom villas/residences with full kitchens, separate living/dining and private outdoor space (plunge pools on villas) — excellent for multi‑generational stays or families wanting space and privacy on Sentosa. (capellahotels.com)

• Resorts World Sentosa (Sentosa) — Festive Hotel, Equarius/Villas, Crockfords (all‑suite options): several family‑oriented rooms (Festive Hotel’s Deluxe Family rooms with loft/bunk options) and larger suite/villa options within the RWS resort complex (convenient for Universal Studios, S.E.A. Aquarium, Adventure Cove). (rwsentosa.com)

• Four Seasons Hotel Singapore (Orchard) — Premier Family Room / Two‑Bedroom Club Suite (58–140 m² range): family rooms with two queen beds and larger two‑bedroom suites; connecting rooms available and family amenities/programmes. Good for families who want Orchard Road access plus roomy suites. (fourseasons.com)

Notes & quick practical tips

• Many hotels offer connecting rooms as an alternative to family suites (useful for flexibility) — ask at booking. (ritzcarlton.com)
• Suite sizes, bedding configurations and kids’ inclusions vary by property and even by specific family suite category — always confirm exact size/bed setup and whether cribs/rollaways are complimentary when you book. (marinabaysands.com