We enjoyed our stay with John and Manuel very much.
We didn't get to meet Manuel, but John was very accommodating and allowed us an early check-in and late check-out.
He provided a second duvet for the very comfortable queen bed and a parking permit for our rental car.
The studio is decorated with a lot of taste and contains everything needed to have breakfast and light meals.
We prepared our breakfast every day and had the recommended Thai take-out one night.
The sights like Capitol and National Mall are within walking distance (if you like to walk a lot).
The Capitol is about 20 minutes away, Union Station 25, Eastern Market 14 and the nearest DC Circulator bus stop on 8th and East Capitol an 8 minute walk.
If you want to get to the other end of the Mall (like Lincoln or Jefferson Memorial) it's approx. 3 miles, but doable.
We didn't use the provided bikes after all as we felt better walking, although it wouldn't have been a problem. There are bikes lanes in several streets, so it would have been easy.
Overall we felt very much at home in the studio with enough space to relax and for our baggage.
The bathroom is nicely made up, perfect for a few days.
The Capitol Hill area is lovely to look at with all the beautiful houses and we felt very safe walking, even at night.
So I can fully recommend this studio for a trip to Washington and would certainly try to stay there again if we ever get back to DC.