Overall I am quite happy with Anne's place and it was a very pleasant stay. Anne is very responsive and easy to communicate. The place is clean and spacious. The furniture are simple but practical and functional. I like the well equipped kitchen and powerful wash machine/dryer.
Petworth is a quiet and nice town, we tried Honeymoon kitchen, the food is delicious with reasonable price. We had our morning run in Rock Creek Park, it is about 12 minutes' drive. And it is only 5 minutes' drive to Rock Creek Cemetery, where we visited the impressive Adams Memorial.
The only surprise is, we have received a ticket for parking at front of the place after the first night. The street turns out only allow parking for those cars with permit. it was also a surprise to Anne. Anne is very kind to offer to refund the ticket, and suggested the new parking location(prk on the block behind the house,i.e.Varnum Street, or the block of 7th street between Varnum and Webster street). Anyway we didn't receive more tickets afterwards, therefore everything is all right.