The No17 bus crosses Reading, its route runs from Tilehurst to The Three Tuns. Bill Buckley from BBC Radio Berkshire travelled the route on Wednesday 10 July 2019 and visited places of interest on the way. One of his stops was at The Retreat.
You can hear the full three-hour show from this link: https://www.bbc.co.uk/sounds/play/p07f3x1y. The piece on The Retreat starts at 2hr 18m.
Alternatively, you can listen to the clip saved here as an MP3 file: