Alex's place is great, right near the U8 for easy transport. Bath is great, shower is hot. I didn't really use the kitchen much during my stay but lots of places to eat out nearby.
Alex was lovely and we had many great chats together and she gave me many tips on Berlin. Initial communication for check in was a little bit delayed. The bed is a little "springy" pillow is a typical European type which I wasn't used to but for a few nights quite good (I stayed for 1 week). Would definitely recommend!