The Loft is a great spot to stay for a solo traveler or couple. It is a studio-style space, but with the dividing curtain we had no problem with my husband and my differing sleep schedules. The bed was very comfortable, as well!
Olivia was an excellent host. While we didn't see her much during our stay, she answered a few questions for us before hand and gave us useful travel information. She has compiled good suggestions in the house manual that we visited, and even offered a yoga session, which sadly we didn't have time for.
I think the best parts of this space are the value and location. Brixton is a great neighborhood with lots going on, and you're right next to all the action, but the house is set back from the busy streets so it's totally quiet.
The space and amenities are just as described. The kitchen is small but totally usable (we cooked both breakfasts and a dinner during our stay with no problem). Good wifi, comfy hammock, bean bag chairs for two.
One potential down side for travelers during the summer months: we had lovely spring weather when we were there and the loft was VERY warm when we got back after a day around the city. It cooled off quickly when we opened up the windows, but I can imagine on a hot summer day that might not be the case. Not a problem for us, but just be aware.