My personal opinion, is it will be too loud to be right next to your bed. I guess if you put it in standby every night then it won’t matter, but when on, you will definitely notice it.
Data Hoarder
We are digital librarians. Among us are represented the various reasons to keep data -- legal requirements, competitive requirements, uncertainty of permanence of cloud services, distaste for transmitting your data externally (e.g. government or corporate espionage), cultural and familial archivists, internet collapse preppers, and people who do it themselves so they're sure it's done right. Everyone has their reasons for curating the data they have decided to keep (either forever or For A Damn Long Time (tm) ). Along the way we have sought out like-minded individuals to exchange strategies, war stories, and cautionary tales of failures.
If you set it up to spin down the disk(s), you won't hear it. If you don't allow for disk spindown, it'll be annoying.
Since you don't intend to use any of its advanced functionality, I recommend that you go for something cheaper than DS224+. Like DS223 or DS223j