Here are five‑star Melbourne hotels that commonly publish last‑minute deals or currently have public offers — plus where to check right now (as of September 14, 2025). Rates and availability change rapidly, so I’ve cited each hotel’s offers or major booking sites you can use to grab same‑day / last‑minute savings.

Top 5‑star hotels in Melbourne with last‑minute deals

• Crown Towers / Crown Metropol (Crown Hotels) — Crown runs direct member sales (Crown Direct) and seasonal “Stay & Save” / Spring Sale promotions (often up to ~15–20% off when you book direct). Good for last‑minute room upgrades/packaged rates when booking through Crown Direct. (crownhotels.com.au)
• The Langham, Melbourne — the official offers page lists advance‑purchase, stay‑longer and seasonal packages; they also run short‑term promotions that can appear as discounted flexible or prepaid rates. (langhamhotels.com)
• Sofitel Melbourne on Collins — package and B&B offers (including occasional short‑term promotions and limited‑time packages) available on the hotel/Accor pages. (sofitel-melbourne.com.au)
• Park Hyatt Melbourne — Park Hyatt is a 5‑star property and posts special packages/availability via Hyatt channels (World of Hyatt / hotel concierge) — great to check for last‑minute room or club offers. (melbournepark.hyatte-concierge.com)
• Grand Hyatt Melbourne — the hotel advertises periodic offers and packages on its site (check the “offers” page for short‑term promotions). (grandhyattmelbevents.com)
• Pan Pacific Melbourne (South Wharf) — has “stay longer / limited sale” offers on the official site (use for last‑minute multi‑night discounts or app/loyalty rates). (panpacific.com)
• The Westin Melbourne (Marriott) — Marriott/Westin publish member/app discounts and short‑term promotions (mobile/app prepaid rates can be useful for last‑minute savings). (marriott.com)
• The Hotel Windsor — historic five‑star property that runs flash sales, staycation packages and “book direct” discounts (watch their special offers / flash sales pages). (thehotelwindsor.com.au)

Where to hunt last‑minute bargains (fast)

• Metasearch & last‑minute aggregators: Kayak, Hotwire and similar sites have “last‑minute” listings and lower same‑day prices (Hotwire’s app/Hot Rate and Kayak’s last‑minute search are useful). Compare these with the hotel’s own site. (kayak.com)
• Book direct: many Melbourne luxury hotels publish limited‑time direct offers (Crown Direct, hotel offers pages above) that aren’t always shown on OTAs. Booking direct can also unlock member extras (late check‑out, breakfast). (crownhotels.com.au)
• Hotel loyalty apps & mobile‑only rates: Marriott, Accor, Hyatt and other brands often have app‑only discounts or member rates that beat public prices for last‑minute stays. (marriott.com)

Quick tips to lock a last‑minute 5‑star deal

• Search “same‑day” or “tonight” filters on metasearch sites (Kayak, Hotwire) and compare to the hotel’s direct rate. (kayak.com)
• Try prepaid non‑refundable rates for steep discounts if your plans are firm.
• Join the hotel’s direct mailing list / loyalty program (Crown Direct, Marriott Bonvoy, World of Hyatt, Accor) — many flash sales are emailed to members. (crownhotels.com.au)
• Call the hotel front desk late afternoon — sometimes front‑desk managers will offer unpublished same‑day upgrades or discounts to fill rooms. (This is a common practical tactic; check hotel policy for availability.)
• Be flexible with check‑in/check‑out dates and room type to capture the best last‑minute price.

If you want, I can search live availability and the best last‑minute rates for specific dates (I’ll compare direct hotel offers + Kayak/Hotwire/Booking results). If you prefer to search yourself, use the hotel offer pages and Kayak/Hotwire links in the citations above.