Great people but.....
I travel to DC monthly for work, and I don't usually stay at Marriott hotels. But, the last three trips I have stayed at Marriott Wardman Park. All three times the staff has been great -- friendly, attentive, helpful, and willing to go the extra mile. Love the location, close to transportation and rock creek trails.
Everything else has been inconsistent. Dirty towels in my room. Tragic ala cart breakfast (although it did provide my travelling companions great amusement). Then, suddenly, my next visit, perfect. Perhaps is just depends on the occupancy rate or time of year.