ABSTRACT Although short-term rental platforms (e.g. Airbnb) are often not considered labour platforms, their suppliers must contend with demands on labour structured by the platforms. Using Lefebvre’s rhythmanalysis, this article examines the spatio-temporal dynamics of cleaning labour for STR platforms through the experiences of student-migrant-workers in Montreal between 2017 and 2020. I argue that yield-focused STR operators (i.e. owner-operators and managers) encounter spatio-temporal friction (or arrhythmia) in their efforts to outsource STR cleaning labour, but some labour intermediaries have responded with strategies to bring this conflict into harmony (eurhythmia) by incorporating the lives and labour of student-migrant-workers. At once limited in their employment options and not exclusively dependent on this work, student-migrant-workers illustrate characteristics that these intermediaries require of the workers they assemble and the flexible labour force upon which STR platforms depend. Rather than replacing labour intermediaries, online platforms have created new spatio-temporal dynamics for labour and new opportunities for those who profit from assembling the labour forces that address them.