Introduction. The aim of this article is to describe the key elements which, according to John Gerring (2006), make relevant and adequate use of case studies. The article chosen for this task is part of the discussion on how territorial marketing, promoted by the implementation of neoliberal policies, affects the lives of local residents in ethnic enclaves, transformed into leisure and tourist areas. After the publication of this article, the concept of ethnospaces, their transformation and policy impact studies were still at a new stage. Using two longitudinal case studies of multi-ethnic London neighborhoods, the authors proposed an insight-generating hypothesis, paying particular attention to explaining possible additional (independent) factors (X2), as well as programs of policy implementation (X1), including These variations are reflected to the detriment of the living conditions of immigrants in “renovated” ethnic enclaves (Y). In other words, it is an exploratory research that considers conditions related to living conditions in multicultural neighborhoods as a causal outcome (Y), hoping to explain how the implementation policies and other factors generate such conditions (X1/X2). As Gerring (2006) would define it, this is X-focused research. Describing a causal hypothesis: East London case studies: 'Banglatown' in Brick Lane, Spitafields and Asian fashion in Green Streets, West Ham. The main argument of the article is based on the assessment of the poor understanding of the consequences of urban economic stimulation and/or intervention programs in ethnic neighborhoods, which makes it difficult to assess long-term social impacts. on local residents (Shaw et.al, 2004, p. 1989). author... middle of article ...... make this a relevant example of how research design issues play a crucial role. In fact, I would say that the way the arguments of the article are presented, the detail of the evidence and the well-structured observations allowed the authors to overcome the limitations of these most different case studies. In Gerring's words, this research shows us a relevant example of “soaking and poking” to contribute to the generation of such complex hypotheses. Works Cited • Gerring, J. (2006). Case study research: principles and practices. Cambridge University Press. • Gerring, J. (2007). Is there a (viable) method for crucial cases? Comparative Political Studies, 40(3), 231-253.• Shaw, S., Bagwell, S., and Karmowska, J. (2004). Ethnoscapes as spectacle: reimagining multicultural neighborhoods as new destinations for leisure consumption and tourism. Urban studies, 41(10), 1983-2000.