Approach

# Hotel = [# Tourists] / [# Beds per Hotel]

# Tourists = ( [Leisure Traveller] + [Business Traveller] ) /2

Leisure Traveller  = [Ppl in the City] x [Ratio of Tourists]

Business Traveller = [Ppl in the City] x [white color worker] x [Ratio of Tourists]

# Beds per Hotel =  [# Floor] x [# Rooms per Floor] x [# Beds per Room]

Ppl in the City = 8 Mio

I  know that there are around 8M ppl Living in NYC City

Ratio of Tourists = every 10th person is a tourist (w/o covid)

I would have guessed that every 10th person you meet in NYC is a tourist (days where there is no covid)

white color worker = 75% are white color worker

(In NYC you have 3/4 of every person working as a white color worker I would assume)

Leisure Traveller = 8M / 10 = 800k

Business Traveller = 8M x 75% / 10 = 600k

# Tourists = (800k + 600k)  / 2 = 700k

Since we took the same tourist ratio of Business and Leisure Travellers we have to still split the overall number of tourists by 2

# Floors = 5 Floors

I think on average there are 5 floors in every hotel

# Rooms per Floor = 6 Rooms

I would say based on my own exp that there are around 6 rooms per floor on an average hotel

# Beds per Room = 2 Beds

There are always 2 beds per room

# Beds per Hotel = 5 x 6 x 2 = 60 Beds

# Hotel = 700k / 60 Beds = 11k

Taken together, I would argue that there are 11k hotels in New York City.

The numbers in this equation where I have the lowest confidence, is probably the average number of tourists that are in New York on a given day.

If you take that 1/3 of people live together in households you arrive at around 2.6M households in New York.
That means that hotels would only make up around 2% of all the apartments that are in New York.

Which seems to be pretty low.

So that could still be accurate.