Mark was very accommodating and very responsive to all of our questions and requests. The apt was very clean and just what we needed for our stay as we were out most of the time. Neighborhood was okay for DC. Entering from the back alley was a little concerning at first, especially at night, but after a couple of days, our concerns quickly faded. Upstairs residents were a little heavy footed occasionally but never really a problem. We had no issues with safety or security and the location is 5-10 minutes walking distance to the Metro station which was very convenient.