The single platformed station, without a passing loop, was located on a steep section of the line between the Garelochhead and Finnart Viaducts. A new platform was built in 1925. Steps ran up from the road to the station and remnants of these can still be seen. Railway cottages were built slightly to the north and these survive as private dwellings. The Whistlefield Store and tea room, later the 'Green Kettle Inn' was built close by to capture the trade created by the railway with steamer excursions on the loch, picnickers, etc. A house for the innkeeper was also constructed. A siding was is recorded as present in 1896 and a photograph of the 1920 or 1930s also shows a loading dock of some kind built from railway sleepers with a shed which may help explain the detailed instructions on the railway sign regarding shunting on the line with its significantly steep gradient. Boxes of fish from the Portincaple fishing fleet were loaded on to passenger trains. The station was host to a LNER camping coach from 1936 to 1939. When first opened no signalling was present and the point for the siding was worked under the control of a tablet. Bruce Henderson was the signalman at a later date, living in the railway cottage until moving to Garelochhead. A pair of semi-detached small railway cottages were also located at Glen Douglas, similar in appearance to the one at Whistlefield railway station. A water balance funicular railway had been proposed from Whistlefield down to Portincaple to carry passengers using a steamer service at a new pier.