Dennis' place is great if you're alone in DC for a couple of days. It's a nice walk from the National Mall and not terribly far (in a cab) from the train station. I didn't go to any baseball games, but it is REALLY close to the stadium. I rarely saw Dennis or his wife, but when I did they were kind and helpful. The neighborhood may look kind of sketchy, but it really isn't, so don't be dissuaded by that. The people in the area are quite nice and there's a really tasty Indian restaurant by the corner store less than a block away. The room is very small but it was perfect for me and my backpack. If you're the kind of person with lots of luggage, you'll probably find the room too small.