MAP https://5e.tools/img/adventure/CoS/047-013.jpg

I will update when you learn more.
A 15-foot-high wall encloses the town, its vertical logs held together with thick ropes and mortar. The top of each log has been sharpened to a point. Wooden scaffolding hugs the inside of the palisade twelve feet off the ground, enabling guards to peer over the wall there.

Three tall gates made of iron bars lead into town:

The north gate is sometimes called the Zarovich Gate, or "the gate to the lake," because it leads to Lake Zarovich (chapter 2, area L).
The west gate is referred to as the Sunset Gate, even though no living person in Vallaki has seen an undimmed sunset. A few abandoned cottages line the road outside this gate.
The east gate is also known as the Morning Gate, or, as some locals like to call it, the Mourning Gate.
Heavy iron chains with iron padlocks keep the gates shut at night. During the day, the gates are closed but not typically locked.

1  St. Andral's Church
-
2. Blue Water Inn
-
3. Burgomaster's Mansion
-
4. Watcherhaus
-
5. Arasek Stockyard
-
6. Coffin Makers
-
7. Blinksy's
-
8. Town Square
-
9. Vistani Camp (southwest of town)

BURGOMASTER'S MANSION
https://5e.tools/img/adventure/CoS/055-015.jpg

The burgomaster, Baron Vargas Vallakovich (NE male human noble), is a ruthless heel who prides himself on his good breeding and finely honed leadership skills. He stages repeated celebrations to foster happiness, and his "All will be well!" catchphrase has become a sad and tiresome punchline. Baron Vallakovich has convinced himself that if he can make everyone in Vallaki happy, the town will slip free of Strahd's dark grasp.

 the baron's wife, Lydia Petrovna (LG female human commoner), has embraced her husband's philosophy of happiness. She laughs at the baron's every comment, to the extent that it has become a nervous reflex, and she tries to spread good cheer by throwing daily tea-and-sandwich parties in the parlor for her "dearest friends," many of them poor folk who tolerate the baroness only because they crave something warm to eat and drink. Lydia is a gods-fearing woman and the younger sister of the town priest, Father Lucian Petrovich

BLUE WATER INN
https://5e.tools/img/adventure/CoS/050-014.jpg

Gray smoke issues from the chimney of this large, two-story wooden building with a stone foundation and sagging tile roof, upon which several ravens have perched. A painted wooden sign hanging above the main entrance depicts a blue waterfall.

The Blue Water Inn is Vallaki's main gathering place for locals, especially at night. The innkeeper, Urwin Martikov, considers the inn a sanctuary from the evils of this land. In the event of trouble, the windows and doors can all be barred shut from within.

A bed for the night costs 1 ep. Characters looking for something to eat are fed hot beet soup and fresh bread at no additional charge. A cooked wolf steak costs 1 ep.

The inn offers a pint of Purple Grapemash No. 3 wine for 3 cp, or a pint of the superior Red Dragon Crush wine for 1 sp. Urwin is hurt if the characters complain about the wines, for his family makes them.

CHURCH
This slouching, centuries-old stone church has a bulging steeple in the back and walls lined with cracked, stained glass windows depicting pious saints. A fence of wrought iron encloses a garden of gravestones next to the church. A thin mist creeps among the graves.

This church is dedicated to the Morninglord and named after St. Andral, whose bones once rested under the altar (More on that in game).

Father Lucian Petrovich oversees the church and does his best to raise spirits. Assisting him is an orphan and altar boy named Yeska. A brawny lad with a perpetually furrowed brow named Milivoj tends the grounds and digs graves.

Among Father Lucian's nightly flock is a sad old woman named Willemina Rikalova. Her son, the shoemaker Udo Lukovich, has been imprisoned for speaking out against the burgomaster. She prays that her son will be set free.