A split into Susan and Nyssa's TARDIS bedroom has been suggested. See talk page.
Given that Foreman was never Susan's real name, and that this was her bedroom before she ever had that name, why isn't this Susan's TARDIS bedroom? After all, there's no need for disambiguation with any other TARDIS resident.
Talk about it here.
During her travels in the TARDIS, Susan Foreman had a bedroom. According to one account, it was later inhabited by Vicki Pallister, (PROSE: Scribbles in Chalk) Polly Wright, Victoria Waterfield, Sarah Jane Smith, Leela, (PROSE: House) Romana, (AUDIO: Psychodrome) Nyssa, (PROSE: House) Tegan Jovanka, (TV: Snakedance, Terminus) Peri Brown (PROSE: House) and Sam Jones. (PROSE: The Bodysnatchers)
For some of the time Ian Chesterton and Barbara Wright were aboard the TARDIS, Susan slept in a communal room (that had two beds and a table) to appear more sociable. (PROSE: The Rag & Bone Man's Story; TV: The Edge of Destruction)
By the time of her departure, Susan had Alydon's coat (TV: The Daleks) and a Blitzen fish (AUDIO: Quinnis) in her room. According to one account, Susan's room remained untouched in the TARDIS holding ring after she left, soon joined by the rooms of other companions. (AUDIO: Relative Dimensions) Minutes after Susan was left on 22nd century Earth, Barbara noticed that the door to her room had already disappeared. (PROSE: Venusian Lullaby)
The Eighth Doctor brought her bedroom out of the holding ring as a Christmas gift for Susan. The Blitzen fish was brought back to life in the process, and wreaked havoc, destroying most of Susan's old possessions. The Doctor later deleted the room so as to move on from the past. (AUDIO: Relative Dimensions)
Used by other companions
According to other accounts, the room continued to be utilised, the first of which was Vicki Pallister (TV: The Web Planet, PROSE: Scribbles in Chalk) and after she left, the First Doctor planned to give the room to his new companion, Katarina. (PROSE: Scribbles in Chalk) Her untimely death soon after prevented this, however. (TV: The Daleks' Master Plan)
Bryony Mailer found herself in this room when looking for psy fluid while the TARDIS was under attack by the Bah-Sokhar, which caused it to slowly shrink its interior dimensions. At the time it matched the Fourth Doctor's current brown control room interior, decorated with velvet and Persian rugs as well as dials and switches, with many of the Doctor's gadgets and trinkets lying around such as a yo-yo and a model of a leopard. The erratic quality of the room reminded her of a Victorian-style opium den. Her visit was only shortly after Sarah had left, so Bryony found and wore her "Andy Pandy" overalls as well as some socks and shirts clearly belonging to the Doctor after having a bath. (PROSE: The Drosten's Curse)
When Nyssa and Tegan Jovanka travelled concurrently in the TARDIS, they shared the same room. Among the features were a clothes hanger including Tegan's attire from 1920s England and some laboratory equipment used by Nyssa. (TV: Snakedance, Terminus) By this time the room had been moved and was now two rooms from the console room. In the separating room was a box which included in its contents a fire extinguisher.
On one occasion, Tegan slept in her bed and was influenced by the Mara which caused her to dream of it and a cave mouth on Deva Loka. The Fifth Doctor created a hypnosis machine to block out the influence and she woke up. (TV: Snakedance)
On other occasion, due to the tampering of Vislor Turlough on the orders of the Black Guardian, the TARDIS began to break up and the outside universe began to merge with the interior. A door to the space station, Terminus opened up in the bedroom which destroyed Nyssa's apparatus in the process. Nyssa boarded the station and when the Doctor, Tegan and Turlough attempted to follow the door began to close but the Doctor threw a chair in the gap to jam it. Over the course of the adventure, Nyssa decided to leave the TARDIS and help cure Lazar's disease. (TV: Terminus)
When Turlough saved Peri Brown from drowning he carried her into this room to recover. (TV: Planet of Fire) She later adopted this as her own room and practised her farewell speech to the Sixth Doctor in it but he burst in and postponed the moment indefinitely. (PROSE: House) She studied botany in there, intending on completing her studies once she returned to her time and place. (PROSE: Attack of the Cybermen)
A long time later, Sam Jones lived in this room. Sam had her own en suite bathroom connected to her bedroom. (PROSE: The Bodysnatchers) Also in her room was a Victorian writing desk, an ergonomic chair from the mid 2050s, a mammoth wardrobe with children's coloured stickers and peeling paint, a 14th century Persian rug, and a 4 poster bed. (PROSE: Vampire Science)