My stay at Michael's was a complete success. After I booked, he made a good suggestion about transportation from BWI. From Union Station I walked east to his place in about 10 minutes. He supplied all the info I asked for. And gave me a transit smart card so I could put money on it to get a big discount on Metro. Nice. The bathroom has a bath as well as a shower.
A newish nearby grocery store is about 6 short blocks away; it had everything I needed. The location is very convenient to the Mall, the Capitol, and the Folger Library. It's a quiet street. And the price is right.