"Come, Scruffy!" The new Hotel Monaco in Washington, D.C., just east of the White House, welcomes four-legged guests with homemade biscuits and ready walkers. Petless?Borrow a goldfish from reception during your stay at this 1842 post office turned 184-room hotel. Part of a chain oriented to the trendy and somewhat budget-minded, the Monaco may have more frills for pets than for children, but its spiral staircases, punch-drunk colors, and location across from the new Spy Museum are fun for everyone. HOTEL MONACO, 700 F St. NW; 202/628-7177;; doubles from $150; kids free.Leah Cumsky-Whitlock