Bad SF. Sometimes bad SF is still good fiction but not, I think, in this case.
The dialog, particularly the technical stuff, is not bad. A few lines stuck with me for different reaons.
The female astronaut describes her forebodings using this phrase "I was getting the strongest ESP waves." Uh huh.
The alien states that he comes from another galaxy. "From Centauri 7... A quintillion light years away". - Now I usually figure in cases like this that the writer simply doesn't understand the scale of things but this writer seems to recognize the meaning of light years and the extraordinary distance described. I like the quintillion figure. May not be quite right but sounds ballpark in cosmic terms.
I must remember the line the alien uses to describe the accomodations for the 3 earthlings. "Two bedrooms. One for the spouses and one for the drone."
I like the alien's description of how his people had landed on our world and encountered humans but " - did not consider the the specimens quite satisfactory." Betty and barney Hill? Threw 'em back. Travis Walton? Probed his butt and threw 'im back. Whitley Strieber? Threw him back... He landed on his head. It explains a lot.