Interview Questions › Guesstimate

Estimate number of rooms cleaned daily in hotels in a city

Estimate the number of hotel rooms cleaned daily by housekeeping staff in a major tourism and business city (e.g. Las Vegas, Dubai, or Mumbai).

Context

Housekeeping cleans both occupied rooms (daily stay-over refresh) and checkout rooms (full deep turnover).

Clarifying questions to ask first

• Which city are we modeling? (e.g. Las Vegas with 150k rooms or Mumbai with 40k hotel rooms)
• Do we count Airbnb/vacation rentals or commercial hotels only? (Commercial hotels).

How to approach it

1. Estimate total hotel room inventory in the city across luxury, business, and budget segments
2. Apply average hotel occupancy rate (~70-75%)
3. Account for rooms cleaned upon checkout vs stay-over guest housekeeping requests
4. Compute required housekeeping workforce capacity

Framework: Cleaned Rooms Daily = Total Hotel Rooms in City × Average Occupancy Rate × Cleaning Frequency (1.0/day)

Sample answer

• City: Mumbai (Commercial capital with ~40,000 branded + unbranded hotel rooms)
• Average Occupancy Rate: 72% -> ~28,800 occupied rooms/day
• Cleaning policy: 100% of occupied rooms cleaned daily + ~1,000 vacant room freshen-ups = ~30,000 rooms cleaned/day
• Housekeeper capacity: 15 rooms/housekeeper/shift -> ~2,000 active housekeepers daily

1. Total Rooms: 40k rooms
2. Occupied: 40,000 × 72% = 28,800 rooms cleaned daily
3. Turnover cleans (~40% of occupied) + Stay-over cleans (~60% of occupied)

Executive estimate: ~29,000 hotel rooms cleaned daily in Mumbai across ~40k inventory (~72% occupancy; ~2,000 housekeeping staff).

What interviewers look for

• Hotel Room Inventory Sizing
• Occupancy Rate Assumption
• Stay-over vs Turnover Cleaning Workflows
• Housekeeping Labor Sanity Check