Mark's place is a convenient and well located unit close to both Gaslamp quarter and the Convention Center. We were assisting a conference and it took us around 25 minutes walking to get there.
Communication with Mark was also fast and effective. He and his wife have been really nice and flexible with our requirements and needs. Their places is really nice, cozy and clean.
We really recommend them for any one looking for a nice play to stay while visiting San Diego.