To concentrate on your research work and thereby reduce the risk of mistakes, a silent environment is of advantage. The importance of the noise level of your ULT strongly depends on the location of the instrument: If your unit is located in the basement, you do not care. If it is located at the hallway, it might be annoying but when the ULT freezer is located in your lab, any dezibel is too much.
Therefore, the noise level has the higher impact the nearer you work at the freezer.
For a quick and comfortable connection of the freezer with power, data, and BMS (Building Management System), a smart collection of all cable interfaces at one location of the instrument is recommended.