We booked Karls apartment for a quick weekend stop at Washington on our family vacation in US. Karl was quick to respond to our messages before and during our stay, and the aparment was pretty much like we imagined it to be based on the pictures and the description. I do prefer a personal welcoming of guests, but I guess it wasn't possibie this time.
We had few issues with the apartment which we might have been possible to figure out with more detailed instructions, but Karl responded pretty quickly to our questions and handled the unlucky insident with the toilet as well as can expected as he was out of town at that time.
We really liked the Bloomingdale area, and ate out and connected with locals in a nice way on several occasions. Karl's apartment had lots of high end amenities and accesories, the beds we on the other hand found a little disapointing and footsteps from the above apartment are somewhat disturbing.
On the whole we had a good stay and Karl has succesfully created his apartment in such a way that we can recommend it to other AirBNB guests.