Almost all of the issues that are described in that article are less about sleeping in space and more about sleeping in a new environment. If you take someone who is use to sleeping out in the country and put them next to a train station in a busy city, they're going to have problems sleeping. Or take the person use to sleeping next to the train station and put them out in the country where there isn't that same constant background noise.
The only thing that seemed to be especially unique to a space environment was the unnatural floating which is likely gotten use to with a prolong period in space. Short shuttle or capsule stay, you aren't there long enough to really get use to it. Multi-month space station stay, you get use to it and probably have a problem sleeping when you come back to earth and that pesky gravity thing returns.