When we arrived, Peter and Jason happened to be hanging out with friends on their porch, and they all shouted out "TERVETULOA!", which is Finnish for welcome! They also had a big Finnish flag up for the duration of our stay!
The reviews are accurate, this is great place! Very clean, cozy and quiet.
Columbia Heights metro station is a 15-minute walk away and the route there is very straightforward and pleasant. Mount Pleasant truly is worthy of its name!
Btw, a taxi from Union Station cost about 20 dollars.