We originally found Encore through a review on IgoUgo and found it to be everything described and more.
Located down a quiet, tree-lined street, Encore's unobtrusive doorway hides the key to a magical and relaxing Inn. Reinhold is a gracious and friendly host, and his touch can be seen throughout.
The common areas are decorated with vintage movie and theatre posters and masks. I especially liked the Kabuki masks in the dining area.
The rooms are themed after famous writers. Due to a scheduling conflict, we had the opportunity to stay in both the Sondheim room and the Edward Albee room. This gave us the chance to experience both.
The Sondheim room is contemporary and comfortable, and includes a great desk area if you are a traveling businessperson. The Albee room has a balcony (which we were only able to use a little bit, as the weather was quite cold) and an alcove window seat that was quite cozy. Both rooms had attached bathrooms with showers and stainless-steel sinks (blow dryers included).
Due to laws in Boston, B&B's cannot serve full breakfasts (I don't know the exact details, but I found this to be true of all the B&B's I researched). Reinhold makes up for that with fresh croissants, lovely granola, cheese plates, and other choices.
I definitely recommend Encore as a great place to stay in Boston. It is conveniently located within walking distance of just about everything (or the subway, the T).