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Anthony Melchiorri, hospitality industry veteran and host of TV series "Hotel Impossible," tells CNN about the <a href="index.php?page=&url=https%3A%2F%2Fwww.cnn.com%2F2016%2F05%2F02%2Fhotels%2Fhotels-deadly-sins-melchiorri-hotel-impossible%2Findex.html" target="_blank">worst mistakes</a> hoteliers can make. Here are the biggest no-nos.

Hotel no-nos —

Anthony Melchiorri, hospitality industry veteran and host of TV series "Hotel Impossible," tells CNN about the worst mistakes hoteliers can make. Here are the biggest no-nos.

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Hair in the drain (or anywhere) —

"When you walk into a hotel, the first thing we have to do is, we have to make believe that the room has just been built -- for you," Melchiorri says. A hair in the shower? A stain on the sheets? Poof: The fantasy is gone.

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Inattentive front desk staff —

Consider the front desk staff your parents, Melchiorri says. If anyone makes a mistake, it's the front desk's job "to be the person that makes everything OK, gives you a Band-Aid, gives you a lollypop." Bad things happen when the front desk "parents" don't give their kids enough attention.

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Micro or invisible managers —

Hospitality is about people working together to create a great experience. Micro-managers may deliver a great guest experience, but they don't trust their own staff, so they'll probably run through personnel quickly.

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Missing amenities —

There's no sin in having a pool. But in some cases, it's a sin not to. Going pool-less doesn't have to be a business killer, but it's definitely a reason to be extra nice.

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