I took this tent to eastern Europe as a one man for three weeks. Space inside for me and my 75litre backpack, however, I agree with the above review that two people (with luggage in the porch) might be a bit of a sqeeze.
I'm afraid I am not able to assess the technical features of a tent, but the zip on the inner side door could have been designed better. The two parts didn't quite meet at the corner (the gap was no larger than 1cm though). Also, I found that the two sheets nearly meet at one point along the spine of the tent, and I was happier having the inner sheet droop slightly, just in case.
Please bare in mind that I think these two flaws are small, and it did stand up extremely well to *very* heavy, constant rain, and the small gap in the zip did not have any consequences - I just happened to notice it.
Overall, I was very pleased with it, and I shall be using it on many more holidays. Hope this helps :)