Sorry it took me so long to reply, but this vacation thing keeps getting in the way of my DIS, hahahaha.
We are on the 24th floor, Room 2124. It has a great view!!! But it is of DTD only, you can't see EPCOT or MK. If you want that view, the way the hotel is shaped, you lose your DTD view. You can see fireworks everynight at midnight from DTD's New Years Eve party. If I were to come back, I would want the same view. It's beautiful.
Also, we have the two queen room and no there is not a pull-out sofa. I checked with the desk and they said you may request a pota-bed. There is more than enough room to put an extra twin bed in here and you would still be left with enough room to have a small party.
Right now it is not easy to get to DTD by walking. That is just because they are working on the roads. It's really going to help with traffic. It appears they are making good progress, so they should be done soon. It really isn't too bad, you just have to walk to the corner at the light to cross. My 6&7 year old can do it, it's fine.
I hope I answered your questions. I will check back if you have any more.
Just one last thing, the staff here is excellent, they bed over backwards for you. I am very pleased.