2010 RAV4 here.

1. Bikes can lay on their sides (front wheels on) with both seats folded but we usually just pop one down, take off the front wheels (no problem with seatposts) and stand them up against the other seat using a bungy cord to secure.

2. I have not tried sleeping in the back, but looks like it would be plenty roomy and yes, the seats fold flat.

3. Yes. We had a '99 4Runner that we finally sold (wanted to downsize and get better mpg) and we have been very happy with these SUVs. I researched 2 years before finally parting with the 4Runner and getting the RAV - after all the research, the choice was between the RAV and the Forrester. Went with the RAV because: (a) more bang for the buck, (b)roomier cargo space, (c) our big dog would not fit well in the Forrester and (d) we had a positive experience with our other Toyota. Your mileage may vary.