Background Public patient involvement (PPI) generates knowledge about the health-illness process through the incorporation of people's experiences and priorities. The Babies Born Better (BBB) survey is a pan-European online questionnaire that can be used as a PPI tool for preliminary and consultative forms of citizens' involvement. The purpose of this research was to identify which practices support positive birth experiences and which ones women want changed. Methods The BBB survey was distributed in virtual communities of practice and through social networks. The version launched in Spain was used to collect data in 2014 and 2015 from women who had given birth in the previous 5 years. A descriptive, quantitative analysis was applied to the sociodemographic data. Two open-ended questions were analyzed by qualitative content analysis using a deductive and inductive codification process. Results A total of 2841 women participated. 41.1% of the responses concerned the category “Care received and experienced,” followed by “Specific interventions and procedures” (26.6%), “Involved members of care team” (14.2%), and “Environmental conditions” (9%). Best practices were related to how care is provided and received, and the main areas for improvement referred to specific interventions and procedures. Conclusions This survey proved a useful tool to map the best and poorest practices reported. The results suggest a need for improvement in some areas of childbirth care. Women's reports on negative experiences included a wide range of routine clinical interventions, avoidable procedures, and the influence exerted by professionals on their decision-making.