We spent three nights at Dan's place with 2 adults and 3 kids, ages 7-10. We're a non-car, city family (Center City Philly) and Dan's place was absolutely perfect for us. While most of DC is 8-12 story newer construction, Dan's place is in the Foggy Bottom historic district - a few blocks of older 2-3 story townhouses. The location is ideal for visiting GW or touristy stuff on the western side of town. It's an easy walk to Georgetown, the Lincoln Memorial, Dupont Circle, the White House, etc. Or, if you're headed elsewhere in the area, the Foggy Bottom Metro is only 2 short blocks away, as is the nearest Starbucks, with Wholefoods a half block further. After only a couple days, it felt like our neighborhood. It's also very easy to access the Rock Creek running/biking trail, and I had a great run down and back to the Jefferson Memorial and Tidal Basin (bikeshare is also nearby, as are those dockless electric scooters that are becoming so popular).
As noted, Dan's place is an older, city house. It's very clean and neatly kept but neither huge nor modern. Kitchen is small, but didn't leave us wanting for anything (hint, you'll find utensils in the hutch, not a kitchen drawer as you'd expect). Laundry was super easy. We didn't watch any TV, but there's a TV (and Apple TV) in the main bedroom only, not in the downstairs living room. Dan was super responsive, although we fortunately didn't really need anything.
We'll try to stay there if we visit DC again later this summer, which should speak for itself. For the price and location, Dan's place thoroughly exceeded our expectations.