Looking for a new flat Southeast

I'm a creative director working in design and culture, originally from the US but living on and off in London since 2009. I'm looking for a new long-term flat SE as I'm returning to the city fully after splitting my time abroad for work.

Looking for a good quality place, for at least 6 months or more while getting settled again. It would be for myself and my partner, who also travels frequently and will only occasionally be there.

I'm very quiet, sporty, and will often be on the road especially in the initial few months. Thank you in advance!