TBH mate there’s not a lot you can do. I would be going with the freestanding one but without knowing the layout of the property only you know if you can live with it or not.
If there’s damage to the area around the socket takes photos and inform the estate manager to cover yourself. Also when you have the annual electrical inspection point the socket out so it can be tested correctly as I know they often don’t do a full inspection and just change the batteries in the smoke alarm.
It's so frustrating, if it was my house I could sort it. Even if I was renting I could probably sort it. Just stupid military ---- contracts making life hard!