The Winterhold Bathhouse includes a showering area with two shower stalls, a steam room, and a sunken pool all of which impart unique buffs when used. There's a cooking pot for your cooking needs. The mod also adds 9 NPCs, including two skill trainers and two merchants. There are some storage areas and a chest you can break into (or find the key for) and loot if you feel so inclined. Or just sit for a spell and read some books.

The bathhouse NPCs may leave during the day and walk around Winterhold, and can sometimes be spotted inside other Winterhold establishments. The best times to see them all are early morning and late at night.

The bath owner Solveig sells a variety of food and drinks (including a unique one), some potions, as well as some alchemical ingredients.

One of the NPCs, Herleif, is recruitable as a follower. He is an ex-Stormcloak Nord who specializes in one-handed weapons.

Compatibility:

Keep it Clean: Should be compatible. Update: Patch is now provided for greater KiC compatibility.
Bathing in Skyrim: Should be compatible.
JK's Skyrim: No compatibility issues noted.
Winterhold Restored: No compatibility issues noted.
The Great City Of Winterhold: No compatibility issues noted.
ClefJ's Winterhold: No compatibility issues noted.
Cities of the North - Winterhold: No compatibility issues noted.
Winterhold Shelter: No compatibility issues noted.
Less Desolate Winterhold: No compatibility issues noted.
Winterhold Stores: Should be compatible.
Immersive College of Winterhold: No compatibility issues noted. My mod doesn't change anything in the college.
Obscure's College of Winterhold: No compatibility issues noted. My mod doesn't change anything in the college.

Anna's Winterhold SE: Compatible with a patch as this mod adds a wall where the bathhouse door is. See the files tab for the patch beneath the main mod file. (Patch thanks to user sattyre).
Holds The City Overhaul: Compatible with a patch as this mod adds a wall where the bathhouse door is. See the files tab for the patch beneath the main mod file. The complete and modular version of this mod will need different patches.

Winterhold's Glory: Not compatible as this mod adds a structure where the bathhouse door is. A patch would be needed.
Winterhold Fully Restored: Not compatible as this mod adds a wall where the bathhouse door is. A patch would be needed.


Known Issue: 

Lighting this mod was actually a challenge. I had to make a lot of compromises compared to how I would have liked to have it lit up. Even though I made sure there's fewer than four (in fact, only one) shadow-producing light source on-screen at any time it sometimes fails to initialize because Bethesda. So sometimes you may see light "pops" even though there shouldn't be any. If anyone has a good solution to this please let me know.


CREDITS:
Oaristys for his resources packs.
InsanitySorrow for the scrubby brush, soaps, and towels.
Stroti for the kitchen tools.
Liam for the blank sign resource and clutter items.
Amilovescake, dourdendevire, Andragon, axinuz, and wgstein for inspiration.

Texture pack used in screencaps: SSE Texture Pack by Osmodius.

MY MODS:
Lord of the Rings Amon Sul - Ancient Weathertop (SSE) (Converted w/ permission)
Improved Brand-Shei Inventory
Riften Bathhouse
Falkreath Bathhouse
Winterhold Bathhouse
Carrot Soup
Whiterun Gatehouse Home and Skooma Den (SSE) (Converted w/ permission)
Solitude Public Bathhouse SSE Patch Collection (WIP)
HP Lovecraft Books (SSE) (Converted w/ permission)
Trent Reznor Standalone Follower
Cream of Mushroom Soup
Ivarstead Sweat Lodge
Stuffed Mushrooms
Raven Rock Bathhouse