What the deck did well:

A straightforward message. This deck managed to get a message across, despite being short. Even though the deck was only 11 slides, it was very clear, straightforward, and visually appealing. They took advantage of the time that investors would spend on their deck. This is important now, because investors spend less than 4 minutes total on any given pitch deck.

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A clear product section. Again, albeit sparse, the product section of this deck was clear and explained what the product actually does. They didn’t go overboard highlighting all the bells and whistles that the product offers. They kept it simple, as product section should be.
Being deliberate about what to include. Generally, this is an example of a pitch deck with an idea that is good and straightforward enough that they managed to get by with few words and few slides. But these days, it’s best to offer investors more information. Airbnb’s deck is a good lesson in being deliberate with what you put in your deck.

What the deck would need to improve to secure funding in 2020:

More slide categories. Despite being clear and straightforward, this deck receives a low score because it’s missing a lot of important information. There’s no “Why Now?” slide or team slide. In 2020, these slides are essential. This is how investors know who they have the opportunity to work with and why it’s important to start now.
More slides overall. This is a major weakness of the deck, and it’s another case where they’re lucky this idea was relatively new at the time. Unless you have a completely groundbreaking idea, it’s best to offer more information than Airbnb did in their original deck. Even then, the harsh truth is that your idea is likely not as groundbreaking as you think, so it’s best to use those other sections to let investors know why your idea is different — and better.

Source: Docusend