For this photo I stood very close to the sea hoping no wave would come and grab my tripod. And believe me I was nervous because I had to stand a few meters away from it as the ground was very wet and soft. Even changing location of feet while standing quite close to a tripod resulted in a completely blurry shot because it caused tripod to move.
In this case I used 5 exposures and manually blended them. This way I have both the stars in the sky, properly exposed hotel as well as nice reflections.
Camera: Canon 5D MK II
Lens: Canon 24 f/1.4 L USM II
Focal length: 24 mm
Exposure time: 2.5 s ("middle" exposure)
Number of exposures: 5
E.V. Step: 1
Flash used: no
Software: Magic Lantern 2.3, Lightroom 4.2, Photoshop CS6