Hi Stewart
No we didn't find out anything more about Belvedere Cottage.
We were not sure whether parts of Bungay Road had changed its name, because on the census, on the page before Belvedere Cottage, also on Bungay Road is schedule 178 Queens Head, New Inn, schedule 179 E.C.R.Station (which I think was East Coast Railway which changed its name to East Suffolk Railway), schedule 180 is Brewers Arms. Belvedere Cottage is schedule no.183. Now unless there were two stations in Halesworth and I can't find another one in the history of Halesworth, then the Railway is now on Station Road and the road is divided by the railway line and the junction is permanently closed off. The New Inn is now the Conservative Club next to the station on Station Road. The other side of the railway line is Bungay Road.
So working from the station at 180 to Belvedere Cottage at 183, is should be just over the railway line on the right if you have your back to the railway line - if that makes sense. We didn't have time to drive all the way round (we thought we'd be able to drive over the railway) but looking on Google street map, there is a new road coming in from the right and a roundabout, just about where Belvedere Cottage would have been. There are modern properties around that area. The oldest properties I can see around the area look to date from the Victorian era.
If you go to
http://www.halesworth.ws/museum/Economic%20&%20Social%20History%20of%20Halesworth.pdf you will be able to read all about the history of Halesworth. On page 52, it states that the railway came to Halesworth in1854 but in 1859 a permanent station was built on Bungay Road. Which ties in with what I said above.
On page 55 of the pdf there is an ordinance survey map of 1902 which shows one side of the railway as being on Station Road. Unfortunately, Bungay Road is on the left hand edge of the map and only a small part is visible. It just shows allotments. I would love to print the pdf but as it has 75 pages, it's a bit impractical.
There is a museum at Halesworth, which is next to the station (in the station yard), but unfortunately, it was closed the day we were in Halesworth.
I will try writing to the curator to see if he knows of any older maps of Halesworth showing Bungay Road in the 1850s/60s.
Interestingly on the 1871 census there is a William Bayes and family living at Belvedere Cottage which states that he is a farmer with 200 acres. So maybe the allotments shown on the 1902 census were part of the original 200 acres.
Lizzie