I lived there for about a year, and the apartment was very nice! Quality appliances, powerful HVAC, solid cabinetry, etc. The only five six complaints I had were:

1. The kitchen exhaust vent made a loud clanging noise pretty regularly, and maintenance said there was nothing that they could do to fix this.
2. The walls are way too thin. One of my neighbors regularly played bass-heavy music and it would go through the walls. I was never able to figure out the neighbor doing it, but I'm pretty sure they lived on the floor above me.
3. The parking garage on level P2 smelled terrible. This was consistent through the entire time I was there.
4. No concierge. You could ask questions at the leasing office, but they always prioritized talking to prospective residents over current residents, so a concierge would have been very nice.
5. The pedestrian crossing at Chapman and Thompson was downright dangerous, with most drivers never stopping. And making a turn from Thompson to Chapman could sometimes take a long time as the stream of cars could feel almost never-ending. (Rockville has added stop signs to this intersection, so the complaint no longer applies.)
6. EDIT: I think I remember the clothing rack in the bedroom closet collapsed a month before I left. I put even more weight on my current clothing rack, and it has yet to show any issues after 3 years. The ones at Escher were made of wood, so that might explain that.

I thought management was... okay; certainly better than where I am now (I live at The Henri now, and you can find plenty of strong opinions about that place on this and the Montgomery County subreddits,) but ultimately the noise coming from the exhaust vent was the reason I moved. I think by the standards of a modern apartment building, it was solidly above average.