Your kitchen designer says "hide it away", so an integrated Robinhood rangehood is the way to go. A powerpack hood is built into a cupboard above your hob.

Features and Benefits
Reversible motor (can be ducted either from top or rear)
900m³/hr maximum motor performance
Three-speed centrifugal motor
Backlit electronic button controls
2 x 1.5W LED lamps to illuminate the cooking area
Baffle filters
Powerpacks can be recirculated but is not the preferred method

Specifications
Product Size	W: 520mm, D: 285mm, H: 313mm
Max Motor Performance	900m³/hr
Max Airflow	752m³/hr
Decibel Rating	Min 40dB (power level 1)
Lighting	2W LED strip
Controls	Backlit electronic button controls
Power Levels	3 power levels + Intensive
Filters	Baffle
Finish	Stainless steel
Installation Type	Reversible motor (can be ducted either from top or rear)