In order to help the main characters catch up with the rest of the students, Professor Weasley helps you find the Room of Requirement in the Astronomy Tower.
While it is known as the "Room" of Requirement, the space itself is divided into several rooms making it a suite. Deputy-headmistress Weasley suggests that the second room in your area be used for combat training, though it is unclear what exactly you can place in that room in order to conduct such drills.
Crafting and Building
At present, we have no information on the specific numbers behind the crafting system, but users can add crafting stations and other decorations to their Room of Requirement to customize the space. These buildables are known as "spellcrafts", the details of which are contained on another page of this blog.
It is important to note that there is an overall construction budget for both the Room of Requirement as well as its vivariums. However, how much each item consumes from this budget is unknown at this time as well.
Vivariums
The Room of Requirement also contains three different vivariums. These vivariums are for holding, rehabilitating, and collecting magical beasts as well as buliding small hamlets and nooks. While primarily for the care of beasts, ingredients such as leech juice can be found if you look around. Also, in some vivariums there are elevated places to which you can climb and clusters of moonstone crystals you can collect to help fill the area with useful deployables.
- Grassland (ground level)
- Swamp (upper level, west)
- Ice/Water (upper level, east)