No Man's Land suggests to tennis players that they shouldn't be there - but of course in doubles many times you need to be attacking or defending somewhere around the service line (No Man's Land - the yellow shaded area above)

Instead, I call this area the most difficult place on the court to play. It takes a great deal of skill to play there so you need to leave that area to improve your position as soon as possible, but how you play in that area determines how well you can compete.

I always teach my students how to play in that area, but they know they should get out of there as soon as they can can for better positioning. In my opinion there is no, no man's land, in doubles.

It is easier to defend at the baseline and much easier to win at the net, so leave that difficult area when you can. Many league tennis players get to the service line and then spend the rest of the point there. In fact, I see it so often, that I call that area in my lessons "home," as so many tennis players do not attack further once the get to that area and they are happy and contented to finish the point there.
Home to me is the net. 
Where is it to you?

Next up some practices to improve your game from the service line area.