Skyrim: Dwemer Bot Factory
In the mountains of the Reach is a location called Deep Folk Crossing, on the border with High Rock. There was once a pass through to the other province, but this has been blocked by rockfalls since the disappearance of the Dwemer. However, in their day, it was a busy trade route that justified a few facilities at the border post.
The remains of one of them can still be found at the site, although much of it has fallen into disrepair, and the Dwemer madam, Mzthlft, is long dead. Her ghost still haunts the location, and she'll rent you one of the bots for a day if you ask.
You'll then be able to take to lift down to the lower level, where you'll find the bots' service pods, a few beds, and several vales and buttons that control the steam power. Only one of the pods is still working, preserving the last of the bots. There are a few more defunct bots, or parts of them, lying around.
Bzuumz, the last Dwemer Sexbot, uses no weapons, other than her heavy gauntlets. She will follow the player, and protect him or her, as the customer is always right.
Before you can get her to follow you, you need to release her from her pod. The door is operated by the button next to it, but the power is off when you arrive. You need to operate the steam valves around the area to get power back to the door mechanism.
Presumably, the facility was much larger when it was in operation, with several more clusters of beds and pods, but the rest of it is blocked off by rubble. It is unclear whether the inaccessible sections catered to the ladies, or those with different tastes. No signage remains to give us any clues.
A book in the upper area will give you some idea how to keep your companion in proper working order.