The intelligent bathroom use case represents a "far out" vision of IKS for direct user interac- tions with embedded contents that are organized by a "Semantic CMS Technology Stack". This case combines advanced content and knowledge management with an ubiquitous com- puting scenario in a place everybody is familiar with - the bathroom. The use case shows how users can interact with contents in physical environments in a way that leaves the di- mension of "small windows to the info sphere" as known by the "monitor paradigm" (Janzen et al., 2010). The objective of D4.1 is to provide guidance for the design, implementation and evaluation of such interactive knowledge-supported ubiquitous environments. In D2.1 (Janzen et al., 2010), a Situational Design Methodology for Information Systems (SiDIS, formerly known as CoDesA) (Maass & Janzen, 2011) was introduced and results from first four tasks of that methodology were presented. In this deliverable, tasks 5 to 8 are applied. Therefore, key re- search challenges for the AmI case will be identified and supported by related work. One of these challenges is the development of a knowledge representation for highly dynamic envi- ronments. So, we started with the conceptual design of such a knowledge representation for the AmI use case; the approach consisting of a contextual and situational part will be intro- duced. We will present our procedure in designing and modelling the knowledge representa- tion by means of Ontology Design Patterns (Gangemi, 2005; Gangemi & Presutti, 2009) that are provided by IKS and that are combined with conceptual models based on SiDIS. Fur- thermore, the development of a logical as well as technical architecture for the AmI case is elaborated. Afterwards, we will focus on the implementation of the technical architecture of the system, especially on the presentation of contents in the bathroom based on the seman- tic knowledge representation. Next, the results of the empirical evaluation of the resulting software integrated in the physical bathroom environment will be presented. Furthermore, the results of the re-iteration phase in T4.1 will be shown, validating the Beta version of IKS in the context of the real-time bathroom environment. D4.1 will be closed by a discussion of ex- periences and lessons learned when developing interactive knowledge-supported ubiquitous information systems by means of IKS.