Everything went very smoothly with our stay at Ivan's place. The apartment itself is a very comfortable, cosy and clean place with everything we needed for a quiet stay in Berlin. Very well presented and looked after. As others have said it's a wee bit off the beaten track and not super close to lots of shops, bars or restauranta but its walkable to this nearby and there is a well-connected bus service right outside. And if you want somewhere quiet and restful, this suits. There was no problem with noise. We didn't get to meet Ivan but his lovely neighbour checked us in and out and made sure everything was fine.