Good value and location
The St. Gregory is in a convenient location, just a few blocks from the Dupont Circle Metro station. I stayed there for three nights on business, and the rate my group had was just $140 per night, which is very inexpensive for NW DC. The room was large, consisting of a small living room, good sized bathroom, and bedroom. The decor in my room hadn't been updated in 15 or more years. The bathroom had 90s-style teal wallpaper, and a strip of those big dressing room-style lights. Everything was functional. My primary complaint was that the air conditioning unit was similar to those at a cheap motel along the Interstate. Each time the air conditioning came on, it did so with a loud bang and it was noisy enough to wake me up a few times during the night. I expect better from a hotel that describes itself as luxury.
Our business group had dinner one evening in the hotel restaurant, and the food was surprisingly fresh and good.
Overall, the St. Gregory is fine, but could stand to upgrade the rooms, particularly the HVAC units.