My significant other and I enjoyed 3 nights at Karl's house. The place was just as advertised, comfortable, great location in a nice neighborhood. It had adequate space for the two of us. It's not luxurious but perfectly serviceable. It was cold so we didn't get to enjoy the lovely back patio area. (Unfortunately, the fireplace was not working which would have been nice on the cold nights.) We were readily able to find street parking within a block of the house all three days we were there. From 7am to 9pm, Monday-Saturday, it's mostly 2 hour parking, so we did have to move the car a few times. (We were out and about most of the day so that it wasn't really an issue then and overnight was no problem.) Communication was excellent with Karl. We'd certainly stay there again next time we're in DC.