Here are several business-friendly hotels in Mumbai that advertise express, digital or mobile check‑in / check‑out options — grouped by convenient business areas and with a brief note on why they suit business travellers.

Airport / Andheri (fast for arrivals/departures)

• JW Marriott Mumbai Sahar (near Chhatrapati Shivaji International Airport) — lists Digital Check‑In and Mobile Key / express check‑in/out on its property page, plus large meeting facilities and a club lounge. (marriott.com)
• Hilton Mumbai International Airport / Hilton Garden Inn Mumbai International Airport — Hilton’s Mumbai properties advertise Digital Key / digital check‑in features and business facilities (meeting rooms, executive lounge options). (hilton.com)
• ITC Maratha (near the airport) — shows “express check‑in/check‑out” and full business centre / meeting facilities on hotel listings. Good for frequent business travellers. (expedia-aarp.com)

Bandra Kurla Complex (BKC) — Mumbai’s main corporate district

• Sofitel Mumbai BKC — lists express and contactless check‑in/check‑out options and is a short walk to the BKC corporate area and Jio World Centre. (hotels.com)
• Trident, Bandra Kurla / Trident Nariman Point (Trident brand) — Trident hotels advertise express or contactless check‑in/check‑out and offer dedicated business meeting space and executive benefits for loyalty members. (Trident BKC is particularly convenient for BKC meetings.) (kayak.co.in)

South / Central Business Districts (Nariman Point, Lower Parel)

• The St. Regis Mumbai (Lower Parel / near Phoenix Mills) — Marriott property page shows Digital Check‑In / Mobile Key and a range of business amenities (meeting space, club lounge). Good for Lower Parel / Parel business meetings. (marriott.com)
• Trident Nariman Point — city‑centre hotel with express / private check‑in and good meeting facilities for South Mumbai engagements. (tridentnarimanpoint.hotelmumbai.net)

Quick tips for business travellers

• Use the hotel’s official app or brand loyalty app (Marriott Bonvoy, Hilton Honors, Accor, Taj/ITC membership) — mobile/digital check‑in and mobile keys are usually fastest. (marriott.com)
• Book an executive/club room or state “early arrival / express check‑in” when reserving if you need guaranteed fast processing or lounge access. Some offers explicitly include early check‑in/late check‑out. (tajhotels.com)
• Always confirm the property’s current check‑in/check‑out and documentation/payment requirements at booking (policies and available contactless services can change).

If you’d like, I can check availability or rates for any of these properties for particular dates or map options by the area you’ll be working in (airport, BKC, Lower Parel, South Mumbai).