Here are reliable business‑friendly hotels in Mumbai that advertise high‑speed / premium Wi‑Fi and business services (locations shown to help pick the right business district). I’ve cited each hotel’s official or authoritative listing so you can confirm current policies and speed/charges before booking.

Recommended hotels

• The Oberoi, Mumbai — premium complimentary high‑speed Internet (up to 4 devices) and a 24‑hour business centre; excellent for Nariman Point / South Mumbai meetings. (oberoihotels.com)
• Taj Mahal Palace (Colaba) — business centre with conference rooms and “high‑speed Wi‑Fi” / premium Wi‑Fi options; good for South Mumbai/Colaba client meetings. (tajhotels.com)
• Four Seasons Hotel Mumbai (Worli / near BKC) — “complimentary premium Wi‑Fi” in rooms and meeting venues; strong tech support for events. (fourseasons.com)
• Trident, Nariman Point — advertises “high‑speed internet” for guest devices and a business centre; convenient for Nariman Point/finance district. (tridenthotels.com)
• JW Marriott Mumbai Sahar (Andheri East / airport) — large property with convention spaces and in‑room high‑speed Wi‑Fi (Marriott pages note high‑speed access; Bonvoy members often get complimentary access when booking direct). Good for airport‑centric business travel. (marriott.com)
• ITC Maratha (near airport / business zones) — lists complimentary in‑room Wi‑Fi and extensive meeting facilities for corporate events. (marriott.com)
• Grand Hyatt Mumbai (Bandra Kurla Complex / BKC vicinity) — sizeable MICE (meetings/conference) infrastructure with “in‑room broadband high‑speed Internet” and wired/AV support for events. (conferencehotelgroup.com)
• The Leela Mumbai (Sahar / airport area) — well‑equipped 24‑hour business centre, meeting rooms and high‑speed broadband for corporate groups (note: some listings show Wi‑Fi may be charged depending on rate/package). (theleela.com)
• The St. Regis Mumbai (Lower Parel) — in‑room Wi‑Fi and meeting spaces; part of Marriott’s portfolio (benefits for Bonvoy members/exec floors). (marriott.com)

Quick practical tips for guaranteed reliable connectivity

• Book executive/club rooms or business packages: many hotels include “premium” or faster in‑room internet for executive floors or loyalty members — book those if you rely on video conferencing. (fourseasons.com)
• Ask the hotel to confirm (in writing) guaranteed bandwidth for your room or meeting room before arrival — for important meetings many hotels can allocate dedicated MICE/meeting bandwidth. (conferencehotelgroup.com)
• Test your connection on arrival (speedtest.net) and ask the IT/concierge to switch you to a wired port or dedicated VLAN if wireless is unstable. (Wired connections are often more reliable for critical calls.) (scribd.com)
• Use a corporate VPN and enable device firewalls; hotel Wi‑Fi—even high‑speed—can be less secure than private networks. (cvent.com)
• As a backup, have a local eSIM/mobile hotspot plan ready (many business travellers use 4G/5G tethering for critical calls). (business.yougov.com)

Notes

• Hotels’ Wi‑Fi policies (complimentary vs. paid, device limits, exact speeds) change frequently — check the hotel’s official page or contact them directly for the specific dates and room class you’re considering. (I’ve linked each hotel’s official/authoritative page above.) (oberoihotels.com)

If you’d like, I can:

• Check one or two hotels on your specific travel dates to confirm whether premium/included high‑speed Wi‑Fi is part of the rate; or
• Show hotels filtered by location (BKC, South Mumbai, airport area) or price range and include direct contact/internet policy details for your dates.

(If you want me to check dates now, tell me the arrival/departure dates and preferred area and I’ll confirm current Wi‑Fi policy and any extra charges.)