There are a lot of hotels near Khadda market in G-7 Markaz. Economical and decent. I have stayed a couple of times at Hotel Al-Ikram with and without family. Except for their room service expecting you to tip them for even asking for the smallest thing, it's all good.
Tip: Make sure you get a room with window, some of their rooms don't have it and ventilation could be an issue even with AC.