Step-down intermediate care aims to offer short-term care for people who are medically optimised for discharge but needing a period for further assessment and/or rehabilitation. The aim of this study, which was nested in a larger evaluation project, was to explore the experiences and perspectives of healthcare professionals to understand the implementation of a step-down IC service in Buckinghamshire, UK. The evidence is used to inform the service providers of what elements worked well and what areas require improvement. A qualitative study using semistructured interviews was conducted in May 2022. Ten healthcare professionals participated. Interviews were transcribed verbatim and reflexive thematic analysis was used to analyse the data. The following five core themes were developed: (1) the developmental period of step-down IC, (2) providing care together, (3) perceived functions of the integrated hub, (4) communication, and (5) resources. Findings from the interviews highlighted the excellent working relationships among healthcare professionals from different disciplines, which contributed to their job satisfaction and the efficiency of the service. In addition, healthcare professionals stressed the importance of the integrated hub, as it facilitated the communication between the teams and speeded up the decision-making. Several organisational challenges, such as communication issues, healthcare professionals’ capacity, and the need for further funding were also voiced. Involving staff in the evaluation of a step-down intermediate care service has provided useful information on the service’s implementation process and will inform the development of a long-term strategy for intermediate care.