We present our prototype DaWeS, Data Warehouse fed with Web Services. Its ETL process is grounded on a mediation approach usually used in data integration. This enables DaWeS (i) to be fully configurable in a declara- tive manner only (XML, XSLT, SQL, datalog) and (ii) to make the warehouse schema dynamic so it can be easily updated. (i) and (ii) aim at making DaWeS scalable and adaptable to smoothly face the ever-changing and growing web ser- vices offer. We point out the fact that this also enables DaWeS to be used with the vast majority of actual web services defined with basic technologies only (HTTP, REST, XML,and JSON) and not with more advanced standards (WSDL, WADL, hRESTS or SAWSDL).