Donna and her sons were great! Everyone was very welcoming and accommodating. Here are some things worth knowing:
1. The bedroom you stay in has an attached bathroom with a shower (no tub), which I loved having (I hate tubs). It's your personal bathroom; nobody else uses it.
2. They have fast reliable wi-fi.
3. They have a dog named Diesel, who you will fall in love with.
4. You have access to the rest of the house (shared with the family), including the kitchen/refrigerator and living room/TV.
5. In the summer, they do a great job of keeping the place air conditioned, which was a huge plus for me.
6. The only sort of down side was the lack of available in-house laundry, since I stayed with them for 4 weeks. There's a laundromat about a quarter mile away, though. If you're used to having laundry right where you live, it's a slight hassle. If you're used to the laundromat routine or won't be staying long enough to do laundry, this is a non-issue, but it was the only thing keeping me from giving the full 5 stars.
6. Within walking/jogging distance, there are multiple trails through Rock Creek Park (just west), which are fantastic.
7. About a block away there are bus stops for the S2 bus, which can take you into DC (southbound) or Silver Spring (northbound). Unfortunately there's not very easy access to a metro stop. The Silver Spring stop is about a mile walk (or bus ride) north, and Takoma is about the same distance east. I never drove anywhere, just used public transportation and Uber.
8. If you like to plan ahead, order a SmartTrip card (for the bus and metro) online before you come (but you can get one in DC anyway). Also, the "DC metro and bus" app is key for knowing when the next bus/train is coming.