Which type of information is most helpful when making a hotel booking for a client?

The name of the hotel your client prefers is the most helpful type of information when making a hotel booking because it directly reflects the client's desires and expectations for their stay. Knowing the specific hotel helps you tailor the booking process to meet the client’s preferences in terms of amenities, location, and service standards. It also simplifies the search process by narrowing down the options to one particular establishment, which is beneficial when ensuring the reservation aligns with the client's expectations and any loyalty programs they might be involved with.

While the number of guests staying, the client’s daily itinerary, and the weather forecast at the hotel location provide useful context, they do not have as immediate an impact on the decision-making process as the client's expressed preference for a specific hotel. Understanding the client's chosen hotel allows for a more efficient booking that satisfies their needs directly.