After a long search, I came across the Grand Canyon - a great tent. It offers enough space for three air beds inside to place and even accommodate a little robe and stuff.
The best thing about the tent but is clearly putting up. First outer tent with the supplied pegs clamp circular (finally a tent where a very stable pegs are included - not this 10 cents DIY parts) - in the middle of the rod in and the tent stands - Duration 10 minutes - afterwards tighten tent and ready - for two we probably. 20 minutes needed to the tent for the first time set up.
Processing is so far perfectly fine - the tightness I can not say anything because it exceptional year (see my other review tent) has not rained.
The fact that the tent has no inner tent is of course in the morning then (if 5 people sleep inside) the inner wall from the condensation completely wet - because you should take care, that you will not hit - otherwise you take an involuntary shower. :-)
For families or trips with more people but the tent is unreservedly recommended!