Map description from what Talice knows (from her former leader):
The blue line marks the run of the former "sewers". It leads down south with no apparent link to the rooms above, except for that black, crossed dot in the middle. It was probably a sink or the like, maybe some sort of well. (right to the left of the "Entrance") The rooms are some 20 feet above the sewer tunnel. First are two toilet sort of rooms (No. 1), roughly hewn out. Talice saw these. If you follow the rough tunnel eastwards, there is a room (20x30 feet or the like) which must have been some sort of private dining area (No.2). There are the remains of a large luxurious table and some eight chairs to be seen (not drawn on the map), all largely rotten. Cupboards line the walls, some still feature some clothes or half-rotten books.
To the south, the large festhall (30x70, some 50 feet high, No. 3) can be reached via an archway. The room is also stuffed with tables and chairs, but their material is still in good shape (different sort of wood). Some stone pillars prevented that large room from caving in, most of these are covered in cobweb-shrouded curtains. The walls are lined by large scale tapestries, but they are in a very bad shape too and you can hardly see what they depicted. Talice says that she entered that room too (she was last of the group and thus arrived later than the rest). Two of her comrades met her here - coming from through the eastern door (leading to No. 8), yelling at her to turn and run, which she did, given the bloodsmeared appearance and seriousness in her comrades voice. She never saw them again and cannot say anything of the other rooms.
The map originates from one of her former leader's sources, whom she doesn't know. Thus, she didn't get any more info on the current dweller or how the rest of the dungeon looks like, if there is one.
On the whole, the rooms looked like being used by some knightly order or perhaps mage guild. Very human style and apparently not inhabited for ages.
