I own more micro servers than most (4), they are all relatively quiet. Personally i’d put them somewhere other than the lounge, but they have at various times spent months in my lounge and at least two at a time.
As to ‘too complicated’ it’s a NAS, it sits quietly in the corner and serves files at a minimum, you map the share to each device and move on with your life, if that's too complicated, then is a NAS really for you?
Can I ask what exactly were you running on the microserver that would cause them to be noisy and complicated? I ask because both of the above points suggest you may have made an inappropriate OS choice or run programs that may not have been ideally suited/configured for the hardware.
Unraid, FreeNAS or Xpenology are all decent options that are dedicated NAS/home server distributions, something like WHS back in the day perhaps, but realistically a NAS doesn’t need to run windows.