The objective of the final project work was to undertake interior design in public premises from the perspective of well-being. The work was done as client-work for the cytostatic treatment room of the Kuopio University Hospital and it involved the renewal of the textiles only. The textiles concerned were wall art textiles and curtains; other textiles were not wanted. The author’s specialization area is textiles, so she didn’t want to commit to the furniture solutions. The objective of the work was also to give the treatment room a more homely feel and advance the well-being of the patients. The author familiarized herself with the things happening in the background and during the cytostatic treatments and took note of the character of the interior. As background knowledge the author was concerned withcolor psychology and the interior design of the hospital. Changes in the room were made by means of the client’s wishes, space analysis and inquiry of the room’s users. The structured inquiry in the final project work was quantitative. Twenty patients and six nurses answered from forty inquiry forms. The author wanted to gain knowledge from the opinions of the room’s users. The meaning of the inquiry was to find out what patients and nurses thought about the original interior and what changes could be undertaken to improve it. The inquiry contained questions about the properties and location of textiles and the influence of shapes and colors. The work is a product development task to plan and realize the needs involved with designing an interior with positive images. This final project work is directed to persons who are interested in interiors and the field of textiles. The results of the work were five art textiles fabricated from paper-mass, which the author planned and realized. These art textiles worked together to give a wholeness to the work of art. In addition to this the author planned and sewed curtains from Finlayson’s industrial, fire retardant curtain fabrics in the treatment room. The author made the art textiles fire retardant herself, as paper-mass works don’t have to be washed. The author hopes that the new interior brings a feeling of well-being to the users of the space and arouses interest in hospital interior design in the future.