Those are two very different lenses.
Firstly, the 30mm is not a wide angle lens...it's about what we would call a 'normal' focal length for your camera. It is a very 'fast' lens though. With a maximum aperture of F1.4, you can get much faster shutter speeds than the other lens, which can be very important. It's also a very sharp lens, and is capable of very high image quality...although it's been known to have focus problems.
The 17-85mm is a decent 'all-around' lens. 17mm is sort of wide (but not really wide) and the range up to 85mm is nice to have. Having IS, is a nice feature, but it's not as good as having a faster shutters speed. This lens does show a fair bit of distortion (compared to high quality lenses) which might be a concern for shooting hotels.
It can be a nice sharp lens, especially when stopped down to F8 or F11.
I have both lenses, and they each have their uses. But if you are really looking for a wide angle for scenery & hotels...I'd suggest the Canon EF-S 10-22mm or the Sigma 10-20mm.
