I stayed in the Bullis House in May of 2008, whilst touring the US. To put things in perspective, I was in the States for a whole month, and was doing my best to make my dollars go as far as I could. As a result, some of the places I stayed in were dubious, to say the least, and some even had UV lights, with timers! Suffice to say, they were often rentable by the hour!
The Bullis, on the other hand, was an absolute delight, and cost far less than many of the less classy establishments I tried. THe rooms have been beautifully restored to their former glory (though there are a few projects that are clearly a "work in progress" - I would guess that there would be a problem sourcing things like fire-place tiles, for instance), and are superbly furnished with period furniture.
In my room, from memory, there were 13 drawers and a large walk in wardrobe, a day bed/chaise lounge, as well as the usual TV, frigde, tea/coffee making facilites.
As I wandered round the building, I found that the whole place had renovated to the same standard, and was spotlessly clean. The only exception to this was the pool, which had a definite greenish tinge but, since I wasn't expecting a swim, it didn't concern me too much.
The concierge was a bit odd, but not overly so by hostel standards, and certainly very friendly and helpful.
All in all, I would certainly go there again, in fact it was the only place I elected to stay in twice in the whole of my trip.
And I was NOT disturbed at all by any ghosts, ghouls, spirits, poltergeists, or any other such paranormal nonsense!
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.