Good size, clean practice room with great gear, top notch drum kit and really good bass and guitar amps (can also be used for recordings).
Really easy to access as there is a Piccadilly line station (Manor House) just 10 minute walking distance and plenty of buses to and from central London.
Paolo, the Head Honcho, is a nice fella that will put you at ease and give you all the support needed.
Highly recommended!