In Google Hotel Ads and hotel metasearch marketing hoteliers commonly focus on one metric above all others: Return on Ad Spend (ROAS).
ROAS is simple to understand. Spend $1,000 and generate $10,000 in bookings, and the campaign appears successful with a $10:1 ROAS.
But focusing only on ROAS can lead hotels to overlook a much more important metric: Impression share.
When hotels optimize only for ROAS, they often sacrifice visibility in the auction and ultimately bottom-line revenue. That means they lose bookings to Online Travel Agencies (OTAs) that could have been captured directly.
Impression share measures how often your hotel appears in the auction compared to how often it could appear.
For example, if your property’s metasearch listing received 50,000 impressions over a period but only appears in 22,500, your impression share is 45%.
That means more than half of the potential demand never even sees your direct booking rate. Those travelers will still book somewhere. In most cases, they will book through an OTA.
OTAs dominate hotel distribution because they are consistently present in metasearch auctions. For a hotel to compete with OTAs, the first requirement is simple. The hotel must appear in the auction.
However, visibility alone is not enough. The direct channel must also maintain rate parity with OTAs. Ideally, the hotel should offer the same rate, or slightly better, than the OTAs.
When parity is strong and impression share is high, hotels dramatically increase their ability to capture direct bookings.
Both scenarios assume the same total market demand of 50,000 eligible impressions, the same conversion percentage (Conv%), click through rate (CTR), and cost-per-click (CPC.)
Watch what changes when impression share grows.
Metadesk generates $20,487 more net revenue simply by capturing more demand in the auction with a higher impression share. The point here is that many hotels believe their Google Hotel Ads campaigns are performing well because ROAS appears high.
But ROAS alone does not tell the full story.
If your campaign is not present in the auction, i.e., you have a low impression share, OTAs capture those bookings.
Many campaigns show very high ROAS because they are constrained by budget. When budgets are small, campaigns participate only in the highest-performing auctions. This naturally produces a high ROAS.
However, the hotel’s Google Hotel Ads and metasearch campaign miss a large portion of available demand.
This issue is extremely common in hotel metasearch. Many hotels assign an arbitrary monthly budget rather than funding campaigns based on actual market demand.
Another factor that can reduce impression share is rate parity. Many hotel metasearch platforms automatically remove the direct rate from the auction when OTAs display a better price.
When parity issues occur, the direct channel may be excluded from many searches entirely.
When this happens:
In reality, the direct channel is simply absent from many auctions.
Because ROAS can be misleading, impression share is one of the most important metrics hoteliers should monitor. Unfortunately, many hotel metasearch providers do not actively report impression share to their clients.
Some providers prioritize maintaining very high ROAS numbers. Others rely heavily on automation or simply maintain an idle technical connection without actively optimizing the campaign.
One of the simplest questions a hotel can ask your current metasearch provider is:
“What is our Impression Share in Google Hotel Ads?”
If the number is low, the hotel is likely missing a significant portion of available demand.
At Metadesk, we offer a pay-per-stay billing model. This allows campaigns to continue spending as long as reservations are occurring. This billing model is popular because it aligns our interests with those of our customers, and it means they don’t have to fund the media spend, which often frees up cash for other advertising initiatives for the property.
It also means risk-free advertising - we cover the media costs, and your property only pays once the stay occurs. Any stays produced by the hotel metasearch campaigns that are cancelled are removed from billing.
Instead of restricting campaigns with often arbitrary budgets, our focus is on maximizing participation in the auction.
Our goal is to maintain at least 60% Impression Share, and most of our campaigns operate above 85%.
Achieving this requires more than increasing bids; we also need to run an efficient campaign to ensure a sufficient ROAS to ensure profitability.
Metadesk works with our hotel customers to ensure:
Our campaign optimization specialists continually refine campaigns to expand visibility while maintaining profitability.
One reason impression share is such an important metric in Google Hotel Ads is that metasearch behaves very differently from most other hotel digital marketing channels.
Metasearch sits at the bottom of the booking funnel:
What this means for revenue:
How this differs from paid search:
Why underfunded metasearch campaigns leave revenue on the table:
The goal of hotel metasearch marketing is not simply to produce the highest possible ROAS. The real goal is to capture as many profitable direct bookings as possible.
Impression Share is one of the clearest indicators of whether a hotel is achieving that goal.
When hotels focus on visibility, parity, and strong campaign optimization, they position themselves to compete effectively with OTAs and capture more of the demand already present in their market.
Metadesk, a platform powered by GCommerce Solutions, offers a comprehensive solution tailored to the needs of modern hoteliers. We have been empowering hoteliers for over two decades. Metadesk specializes in increasing direct revenue by adapting metasearch advertising strategies to meet the needs of individual hotel properties.
Learn more about Metadesk and how we help hotels and resorts increase their direct bookings here.
Frequently asked questions about Google Hotel Ads
Impression share in Google Hotel Ads measures how often your hotel appears in available auctions compared to total eligible searches. A higher impression share means greater visibility to travelers actively searching for accommodations. Low impression share results in missed booking opportunities, often allowing OTAs to capture demand that could have been booked directly. Metadesk focuses on optimizing your Google Hotel Ads campaigns to maximize impression share for greater direct bookings.
Return on Ad Spend (ROAS) only measures efficiency, not total opportunity. Metadesk has found that campaigns with high ROAS are often limited by budget, poor conversion rates, or auction constraints, meaning they only participate in the most favorable auctions. This can hide lost revenue potential because the campaign is not capturing the full available demand.
Conversion rate directly affects ROAS, which in turn influences how aggressively campaigns can bid and scale. When conversion rates are low, ROAS declines, limiting a campaign’s ability to compete in auctions. This results in reduced impression share, meaning the hotel appears less frequently in search results and loses visibility to competitors and OTAs.
Metadesk advocates that most hotels should aim for at least 60% impression share, with high-performing campaigns often exceeding 80–85%. The goal is not just efficiency, but maximizing profitable direct bookings by capturing as much existing demand as possible within the market.