Beyond the heavy steel door are a variety of rooms, a courtyard garden and a rooftop reading room and lounge, built over mid-19th-century foundations. Smallish rooms are simply furnished but comfortable, and there's a generous buffet breakfast. From Jaffa Gate, walk down David St, then take the first right up a narrow staircase; the guesthouse is 100m down on the left.
Add lunch or dinner for an extra €18. Book ahead: this place is popular.