One possible version:
Dear Sir,
I'm writing to request a valuable chance to be one of the host families for the British students.
Located in a beautiful and quiet neighborhood, our large fully-equipped apartment answers all their needs.
Apart from the convenient public transportation, our own car can also take them to some nearby places of
interest. With fluent English and an outgoing personality, I'm sure I will have no difficulty communicating
with them. Above all, we hosted two British students last year, through which we've gained lots of experience.
In addition, my mother's expert cooking can guarantee them a wonderful chance of tasting delicious Chinese
food.
I would greatly appreciate it if I could have the chance to host them and make friends with them. Looking
forward to your reply.
Yours,
Li Hua