Ah, a quintessential Thief level. Takes place in a mansion with guards (a lot of guards, for that small of a space, honestly), steal some stuff. It's got a nice twist in that you're breaking out Basso's girlfriend, with Garrett having a typical jaded attitude about feelings.
This is definitely an intro type level. I'm assuming that they didn't include a training level because this is a sequel, but they are clearly easing new players into the game world with this level. It's short, the requirements aren't overly onerous, even on expert.
So Basso has picked the lock of the butler's room (Garrett has apparently forgotten his lockpicks for this job). Luckily for Garrett, the butler has left the key to the rest of the house on a ledge in his room, making it easy to access the rest of the house. I head upstairs first, to fill my pockets with whatever I can find. There's a nice bonus objective of finding rings for Basso and Jenivere, and since Garrett has forgotten his lockpicks, it's fortunate that some of the guards have keys. Playing on expert, I have to score 8 knockouts, so every guard in the level is knocked out just to be safe. Luckily, I play this way anyway, otherwise I would find this objective a bit objectionable. It's part of the training aspect of this level, so I guess it's OK. On the third floor in the bedroom there is a secret wall safe, which is one of the three secrets in this level. After I've looted the upstairs, including the outside where the guards are surprisingly lax (I mean, the owner is gone but I unlock and open the front door and they're all "Hey what was that? Musta been nothing"), I head downstairs. The armory has another secret, with some additional weaponry, including a flashbomb which comes in handy. The wine cabinet has the third secret, a speed potion (I never use them, so it's not a great secret for me). Once the guards here are all knocked out, I go outside and tweet the bird whistle so Basso can break out Jenivere.
This is another well-designed space that feels functional, as in I could imagine it having been actually built for a rich person with servants. Strangely, only one servant in the kitchen and like 10 guards (and of course Jenivere locked in her room). And the rich owners always seem to be gone. Don't they sleep at their house?
The first thing I noticed when playing this level is the subtle color variations of the lights. I don't think I noticed that before. The torches have a red hue from the fire, and the electric lights are more bright white with maybe a hint of blue? The torch in front of the guard station is an area that really shows the colored lighting. Anyway, it's a nice touch, though very subtle and has no impact on the game play. The texture artists did a good job with the wood textures here, they look very rich and add to the wealth and opulence of the place. Though I am playing with some mods installed by T2Fix, so I know I don't have the original textures in all the places. Still, my memory of the first time I played it is that the places Garrett goes to and steals from got a bit richer, if that makes sense. The gas lights are another touch that make the place seem very wealthy, as I can only imagine that having gas lights would have been incredibly expensive in the world.
Overall, a bit of a lightweight level, but a nice introduction (or re-introduction if you played The Dark Project) to the world. Not a ton of hand-holding, but not a very hard mission either. It's got all the things that make a good Thief level, and it can be completed in under an hour, even if you go everywhere and find everything. It's not up to the standard set by Lord Bafford's Manor from the first game, but it does well enough.