We booked this place for 6 adults and 1 kid during Boston Marathon weekend. Only 4 adults ended up staying here.
Con: If you are booking this place for a large group, keep in mind that there is only 1 bathroom. The common area was really tight for a large group. The table in the dining area was wobbly. Not enough dining chairs (we wanted to make pre-race dinner in the place, and the table/lack of chairs situation made it very tricky). The dishwasher was broken. No closet space to hang clothes in the entire place (but there was a dresser in the bigger room). It's a second-floor walk-up which may not be friendly for older guests. And "Luggage dropoff allowed" would only allow you to drop off bags as early as 2 pm.
Pro: Amazing communication. Clean. Very comfy beds and soft bedding. Lots of blankets. Plenty of towels. Night lights throughout the space. Quick Internet. Decent location.