We traveled to Catlin's place for a guy's trip and it comfortably accommodated 8 of us. It was clean, well equipped and a short 5 minute walk from the Metro (Orange Line). From Catlin's place you could be downtown in about 25 minutes with minimal hassle (Boston is very transit friendly).
Ryan (the property manager) was very responsive and accommodating while we were there.
If given the opportunity to stay again we absolutely would! Thanks for hosting us Catlin and Ryan!!