I've got a wolfcamper 8 man tipi. It comes with an inner tent which is pegged down inside the main tent and suspended from the pole. Used it for two weeks round Norway last year and it was bloody brilliant. Torrential rain whilst in Oslo too and the only issue I had was where the tie backs are sewn through the seams and dripped through onto the inner tent. As for water dripping in when looking out at the rain, it's quite a valid concern but it doesn't fall near the inner tent. the door is sewn down one side rather than along the top so you can't create a little porch which can be annoying.
It's supposed to sleep 4 in the inner tent but I'd probably find it uncomfortable with 3 to be honest, I'm 6'3".
I love it. It was also at the cheap end of the tipi scale, I think 300.
Oh, it's 10Kg though but this wasn't a problem even with my girlfriend and two stacked panniers and dry bag on the bag.