Crystal Thayer lives in northern DC.  I have seen her.  She is excellent.  Highly recommend.  Backchannel me if you'd like some logistics to help with your visit.

Tiffany Makayla and VIP Katalina are two local ladies that advertise regularly and appear to enjoy good reputations, but I have not seen them.  The same with Reveca/Roxana (she is in Alexandria).

Do not see Penelope Pinga.  I have not seen her, either, but she has a history of poor reviews.

There are always ladies that are just traveling thru.  See who is around on Eros, ts4rent, and tsescorts.

And, FWIW, I know a lot of ladies advertise being in Dupont Circle.  Never liked that.  The traffic, commute, and parking are a buzz kill.  Tysons (or the western DC beltway) are my favorite areas to visit.

Hope that this helps.  Backchannel me if you'd like more info.  Safe travels.