Here are highly recommended Melbourne hotels that advertise babysitting/childcare (either in‑house or arranged by concierge) — with a short note on how they provide care and sources so you can confirm/Book:

• Crown Hotels (Crown Towers / Crown Metropol / Crown Promenade) — luxury, family‑friendly properties; concierge/booking desks routinely arrange babysitters and OTAs list babysitting/childcare as an amenity. (crownmelbourne.com.au)

• The Langham, Melbourne — five‑star riverside hotel; third‑party booking platforms and family pages list “in‑room childcare” / childcare on request (usually arranged by concierge). (hotels.com)

• Park Hyatt Melbourne — luxury hotel that lists babysitting/child services among its family amenities (usually arranged via concierge). (kiwicollection.com)

• Sofitel Melbourne on Collins — central luxury hotel with family offers; multiple hotel pages/OTAs show “in‑room childcare / babysitting” available (on request/surcharge). (sofitel-melbourne.com.au)

• Novotel Melbourne on Collins — a popular family option; Novotel’s family pages and OTAs note babysitting/childcare can be provided (usually on request). (novotelmelbourne.com.au)

• Grand Hyatt Melbourne — large 5‑star CBD hotel; OTAs list in‑room childcare / babysitting as an available (surcharge) service. (hotels.com)

• InterContinental Melbourne (The Rialto) — does not usually run an in‑house kids’ club but the concierge commonly arranges vetted babysitters/childcare for guests. (Check directly with the hotel.) (tripadvisor.com.au)

Practical tips (what to ask/confirm when you call or book)

• Ask whether babysitting is “in‑house” or arranged via a local agency/concierge, and whether the sitter will come to your room or use a kids’ club space. (Many Melbourne hotels use trusted external nanny services.) (citybabysitters.com.au)
• Confirm sitter credentials: Working With Children Check (WWCC) / police check, first‑aid qualification, minimum booking hours and hourly rates, cancellation and late‑arrival fees. Local nanny agencies advertise WWCC and first‑aid as standard. (melbournenannyconcierge.com)
• Book early — especially on weekends and school holidays — and get the hotel/agency confirmation in writing (time, name of sitter, ID/qualifications). (expedia.com)

If you’d like, I can:

• check and compare babysitting policies and approximate costs for any two or three specific hotels or dates (I’ll confirm directly from the hotel/agency pages), or
• give contact details for a few reputable Melbourne babysitting agencies that commonly service hotels.