In the astral realm there are different planes, there are lower astral planes and higher astral planes.
I personally have seen similar places to the physical plane but im moving a lot faster, flowing fast.I've seen beautiful beaches.
However one very memorable place I went to which was definately on the lower astral plane was a grey desert, I've seen a grey desert a couple of times but in this particular place there were grey stone pyramids and some weird fire with no smoke and some people/ beings doing all sorts. I wasn't afraid of them but i know that a lot of people would be. I saw lots of other stuff that time that Im not gonna share.
The more higher your vibrations the more likely you get to a nicer place, as there is postive and negative, like on the physical realm. So from experience I would recommend that you dont try and a.p while angry. Do it while in a positive mood.