Wall-mounting flatscreen TVs in a rental unit used to be living nightmare. But now that TVs are thinner, lighter, and easier to mount than ever, there's really no excuse to not give it a go with all the available mounting solutions available today. Here's some 'best practice' techniques that we highly recommend you check out.
There are also plenty of furniture that emulates a wall to give that illusion of a wall-mounted look. IKEA has a number of these solutions if you're looking for something on the cheap.
Finally, the key is to place the TV where it's highly usable, but away from the center of focus (unless you're constructing an all-out theater). This way, you still enjoy the benefits of a large piece of tech equipment on your wall without distracting from the rest of the room's intended purpose (Picture 4, a kitchen TV).