My parents were in town for my wedding and stayed at Ingrid’s place, which as a resident of DC, I can say is in an absolutely perfect location. It is a <5 minute walk to Union Station, allowing access to the metro and Amtrak. It is very easy to get to any desirable location in Washington via public transit or Uber/Lyft. In addition, the amenities and decor were top notch and all of this is way cheaper than a hotel, especially if you travel in a group of 4-5. You should stay here if it’s not booked already.