You can take part even if you only have secondary knowledge of that city. 
I lived there for most of my BA degree years, so a bit less than 3 years.
My favorite part of the places in lived in was definitely the second zone locality of Holland Park. Most of it is built around neoclassical three-floor white houses.
The small park the region takes its name from is also serene.
It is next to Notting Hill, and one of the edges of Hyde Park.
I also liked Bayswater a lot, much more lively. Paddington (with the massive train station) is also a nice residential area although most of it has small hotels.
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As for overall favorite place there i have been to (not stayed at), i think the vast Gothic buildings near Westminster (and Embankment) are the most impressive sight in the city. While most of the older parts were destroyed during the ww2 bombing campaign, you can still see even late medieval houses in the central parts (for example in the Marble Arch area)
A map of the central area (zone 1 and some of zone 2) :

I lived there for most of my BA degree years, so a bit less than 3 years.
My favorite part of the places in lived in was definitely the second zone locality of Holland Park. Most of it is built around neoclassical three-floor white houses.
The small park the region takes its name from is also serene.
It is next to Notting Hill, and one of the edges of Hyde Park.
I also liked Bayswater a lot, much more lively. Paddington (with the massive train station) is also a nice residential area although most of it has small hotels.
*
As for overall favorite place there i have been to (not stayed at), i think the vast Gothic buildings near Westminster (and Embankment) are the most impressive sight in the city. While most of the older parts were destroyed during the ww2 bombing campaign, you can still see even late medieval houses in the central parts (for example in the Marble Arch area)

A map of the central area (zone 1 and some of zone 2) :
