Nice set up, but I hope the S1 is undervolted, otherwise I can't see why running a S1 today would be worth it. An S3 will use the same wattage as an S1.
My electricity includes in my apartment's flat rate rent. S1 is actually slightly overclocked

Seems like stealing. your apartment's flat rate rent is not include bitcoin miners.
No.
That Venezuela -case where some big miners got caught, that was stealing.
At least, based on what I've heard.
I'm not violating my rent contract.