Thats Charing-X - probably the most famous (some might say infamous) GIC in the land.
Some people who go there get on great, others have a tough time, its like everything else in life, there are no guarrantees, but its a competent place, and as long as you get on ok with whoever you see you should be fine.
I've never been there, but as a medical student I've been taught by a few of the doctors that work there, and indeed met one or two at a conference too so needless to say my opinion is broadly positive subject to the limitations that I stated at the start.
I wish you a good experience.