I know a lot of folks don't like a corner bed but here is something to consider. A Class C is always a trade-off of some sort. If you want a shorter Class C (under 27') a walk around queen bed is almost impossible to find. If you want a sofa or sitting chair, the room has to come from somewhere as you have a very limited space to work with. If you want a walk around Queen with a sofa and a slide or two. You can get them but you are looking at a bigger rig. With the bigger rig come tail swing and more handling issues. Yes they can be addressed but it is a trade-off for having more space.
In our rig it isn't easy when one of us needs to get up in the night but not impossible or really even a hardship even though we are both in our 60's. Things we looked for were a rig with a comfortable driving position (room behind the driver's seat), lots of windows for light, (including windows on the sides of the slideout, and comfortable seating inside for those rainy Great Northwet camping excursions. We didn't want a leaky overhead bed, and we wanted something on the shorter side for maneuverability. We also wanted a fiberglass roof. We got all that but we did have to compromise on the corner bed. We also had a budget to work within which drove some choices. We had to compromise on a smaller bathroom which doesn't have much room for a big guy on the toilet. But we manage. That's the wonderful thing about Class Cs, they make one for almost every need. It's up to you to decide what's important to you.