Like most antennas, getting it away from the structure is ideal.
Here, the small loop depends on balance to obtain the low angle figure 8 directivity which allows you to aim it to put a noise source well down in the notch.
For instance, the guy across the street running a noisy wall wart might be easily nulled out with rotation, without affecting sky-wave reception too much. In the picture, this would most likely be like looking through the loop like a large magnifying glass. As it is now, you wouldn't be nulling out any noisemaker from across the lot but off to the sides. And at low angles.
But, being so close to the house, one side of the loop is closer to metal than the other, and now the loop is not perfectly balanced. Your null-depth and low angle directivity may be skewed and may be hard to null out that noise from the guy across the street.
Move the loop outwards a bit - say to the walkway - and a very sharp null could take out that noisy wall wart across the street with careful aim. And on both sides of the rotation 180 degrees apart - take your pick.
From a sky-wave standpoint, there isn't much directivity, although with careful observation, you will have an oblong kind of egg-shape directivity for skywave sigs. So there is *some* directivity, but it is not as apparent as at the lower angles.
If you DO notice a very directional change when listening to skywave (ie not local groundwave) signals, then your loop is very unbalanced. This can be caused by an unseen metallic object, or in some cases poor construction allowing the shield of the coax to actually be part of the antenna itself - major unbalance - and no classic loop directivity. Some manufacturers will include a "galvanic" isolator, or perhaps a good rf-choke out at the loop just in case.
