Rip-off: "Waterless" Hot Tub, Smelly, Dirty Room, and Rude Personel.
I really cannot believe this place. We booked three rooms. A King Spa Room, A Spa Suite and a Superior Suite. Upon arrival, they explained that the downgrade we had agreed to in order to stay on the same floor was not possible due to a mistake They were sorry and understood. So we accepted a downgrade (for the same money) for a benefit they offered to provide; we did not get it, nor did we get the money back. They fixed this the following day. So far, so bad but, please believe us:
- Spa Rooms (both) with NO HOT WATER ON THE "HOT" TUB (a maintenance person claimed the boiler wasn't working correctly. Genius!)
- Our floor (4th) smelled like human feces, especially on the hallways. (a maintenance person checked this and agreed we needed to complain... after we did, of course. No solution.)
- Rooms were dirty and dusty when we arrived and housekeeping services were a joke; they hardly made the beds, and wouldn't even pick up things from the floor, nor throw away empty cans or melted ice. We complained but... nothing. Dog hairs on our chaise long, dust everywhere, etc. Things we took from the minibar were not replaced in three nights. 
- Rooms are ultra dark, and the only way to light them up is to turn on 10+ little lamp switches.
Location is great, which makes running away from the mess easier.
Upon departure, we complained in detail about all these issues. "I'm sorry to hear this was all e got as an answer".
Anyway. All this wasn't enough to spoil Washington for us. What a great city!
Conclusion:
I DO recommend visiting Washington.
I DON'T recommend staying at the Palomar.
Edward, Boston MA