I received a quick response from the host regarding my booking and other questions. Although the neighborhood is as described as others' feedback, I find it very quiet and peaceful at night for me to have a good night sleep. Even though I was hoping to bike to and from the Convention Center, I found out that there is no lock for the bike. So I ended up walking for about 25 minute each way, which turns out to be a good exercise after a whole day's workshop. In all, it is a nice place to stay. I am giving it 4 stars only because of the bike lock situation.