Is cooking a raw steak in the microwave safe?
Yes, it is safe. It is really more a question of quality. I would suggest that, in your specific situation you get a browning dish. (It would be something that you could still use after your move, if you like.) Please see the excerpt below from  this page .

There is nothing like a charbroiled steak straight off the grill. But for the times when you don't want to fire up the grill - or even get the broiler dirty - there is a way to sear steaks in the microwave on an accessory called a browning dish.
A microwaved steak will not brown well without one, and the dish is really the only acceptable way to brown in the microwave.
Browning dishes can be either flat rectangular plates or black skillets that are designed for the microwave.
Embedded in the plate or skillet are metal strips that cause the microwaves to couple or link, producing an electrical current. The dish also is coated with a metal that is resistant to the electrical current.

You can read the rest of the article and the how-to information by following the link.