it's not a bad place to see a show. good sight lines, good acoustics, seats just under 2000, and can be surprisingly intimate. i would recommend floor rather than balcony tho.
honestly tho, i am genuinely surprised that if they were playing dc and not going to a larger venue like constitution hall, wolf trap, or merriweather post (where they played on the last PN tour), that they chose not to book the 9:30 club, which is one of the best clubs in the country, and fits 1100 people at capacity. would've been cool to see them do a couple nights there, but i'm sure that there were issues like shows already booked at the time when DT's gonna be in town, etc.
so all in all, good place, and WAY better than constitution hall, which was where they played on the octavarium tour. i'm looking forward to it.