So, the module notes the absence of a map for St Andral's Church, and prompts the DM to use the same layout as the church in Barovia village. To that end, I simply made a better-maintained version of my Barovia Chapel map.
However, Vallaki is *significantly* bigger than Barovia village by my understanding, so surely it would need a larger place of worship than a dying village, no? I also imagine that, as the resting place of a saint and symbol of hope and comfort to the masses, it would also be a fairly well-funded location - given the whole 'All will be well' thing Vallakovich is so fond of. Because of that, and because of my love for dramatic locations, I also designed a cathedral for Barovia, complete with an upper level and catacombs, where the bones of Saint Andral would be stored, should you opt for the cathedral over the church.