Heather's house was lovely. It was fully equipped with a gas stove, microwave and refrigerator which had filered water so you can refill bottles.
She also had useful things - like restaurants to eat at, a map to the metro stop - available in the home. There was Wifi but unfortunately the range extender in my room was broken. I told Heather this and they tried to rectify the situation. But because I only stayed for 3 days, I wasn't there for the fixed router. There is still wifi in the common areas.
Overall, the experience was lovely. The bathroom was my favourite part. It had two showerheads and the perfect lighting on the vanity mirror.
I highly recommend Heather's house when coming to DC.