The entrance is marked as Cross Gates.

via StreetComplete 61.2

Double check the addresses here as 71 appears to be missing.

Confirm whether this is a tourist attraction and if there's a footpath/access to it.

put a barrier here

via StreetComplete 61.2

Attached photo(s):
https://streetcomplete.app/p/298499.jpg

footpaths

via StreetComplete 61.1

GPS Trace: @AlmostSurelyRob/traces/12028667

Stairs here

via StreetComplete 61.1

Attached photo(s):
https://streetcomplete.app/p/291736.jpg

stairs

via StreetComplete 61.1

Attached photo(s):
https://streetcomplete.app/p/292023.jpg

Flats 1 to 4, 5 to 8 and 9 to 12

via StreetComplete 61.1

In context of overlay "Addresses" – Residential Building – way/759674536 via StreetComplete 61.1:

Brickhill Cottage and Ashlea

Unable to answer "What street is this on?" – house number 8,2: Semi-Detached House – way/760521267 via StreetComplete 61.1:

Need to split ti cover both streets