Here are Melbourne hotels known to organise or arrange small-group / private guest experiences (walking tours, cultural tours, river cruises, winery or scenic day trips, helicopter/air experiences, etc.). I’ve listed what each hotel commonly offers or can book through concierge, with sources you can check or contact them about directly.

• Crown Towers / Crown Hotels (Crown Melbourne) — concierge partners (Microflite) offer private helicopter scenic flights, winery/food-and-wine experiences and curated day trips (including Great Ocean Road / Twelve Apostles options). (crownhotels.com.au)
• The Langham, Melbourne — runs/arranges hotel-led activities (walking club, behind‑the‑scenes hotel tours) and books Yarra River cruises and private excursions. Concierge can arrange guided day trips. (eglobaltravelmedia.com.au)
• Grand Hyatt Melbourne — “Discovery” activities and concierge-arranged small-group or private walking tours, food/market experiences and other curated local tours. (grandhyattmelbevents.com)
• Park Hyatt Melbourne — dedicated concierge / e-concierge service that arranges bespoke private and small-group tours and personalised itineraries. (melbournepark.hyatte-concierge.com)
• InterContinental Melbourne The Rialto — Les Clefs d’Or concierge / “Insider Experiences” offering personalised itineraries and curated local tours (cultural walks, museum/heritage visits, private outings). (melbourne.intercontinental.com)
• Sofitel Melbourne on Collins — concierge service that recommends and books local guided walks (including Aboriginal Heritage Walks), cultural and nature excursions around Melbourne. (sofitel-melbourne.com.au)
• QT Melbourne — boutique hotel with an active concierge/programmes and regular on‑site experiences; concierge can arrange guided laneway/food/walking tours and local partner activities. (qthotels.com)
• Ovolo Hotels (Melbourne properties) — “Summer Concierge” / curated experiences program and local partnerships that give guests access to small-group experiences and local activities. Concierge can book local tours. (ovolohotels.com)
• The Hotel Windsor (and some historic CBD hotels) — often serve as meeting/start points for small, guided walking tours of the city; concierge/tour partners run small-group history/laneway tours that meet at the hotel. (activities.marriott.com)

Quick booking tips

• Ask the hotel concierge for “small-group” or “private” options and the maximum group size — many operators run groups of 6–12 for more personalised tours.
• Book experiences at least a few days in advance (longer in peak season) and confirm meeting/transport details with the concierge.
• If you want a specific type of tour (Aboriginal cultural walk, foodie market tour, Great Ocean Road day trip, winery tour, helicopter scenic flight, wildlife/Phillip Island), tell the concierge so they can match you with an appropriate small-group operator or arrange a private option.

If you want, I can:

• Narrow this list to a specific neighbourhood (CBD / Southbank / St Kilda / Brighton) or hotel category (luxury vs boutique).
• Look up direct concierge contact details and the exact small-group options/prices for 2–8 hotels you pick.