Vilma is lovely and you could spend hours chatting with her while drinking her real Colombian coffee! She's very open minded and friendly, and as we entered the house she invited us to open the fridge if hungry and take a drink if thirsty.
The room is r-e-a-l-l-y as you see it on the web-site: spacious, clean, with a lot of natural light, comfy mattress ( even if not king-size ), very good quality bed linen. The bathroom too is clean, new and sufficient size. Before the arrival Vilma asked us if we had any special request and she kindly provided blackberries juice and decaffeinated coffee for breakfast as desired.
The location : the house is well connected to the center by bus ( we just spend few days there so for us the easiest way was take the bus at Victoria station, stop at Albert Bridge, walk across the bridge and 3 min more walking ); you have to walk 10/15 min to arrive to the tube station ( Sloane Square). TIP: if you visit London for 2 days only, maybe would be preferable to invest the time you use in transfers to/from the house to visit the town, obviously if you don't mind too much to sleep in a noisy or small room ( and not always clean ) in an average central hotel. If you have few days more to enjoy London Vilma's is the place!
I do absolutely recommend Vilma's place and will come back to her next time in London.

for Italian travellers only : non ti aspettare il concetto di Bed&Breakfast cui sei abituato in Italia, non ti aspettare di svegliarti al mattino, scendere in cucina e trovare tutto pronto ed apparecchiato. Non solo in questa casa ma mi pare di aver capito che in molte case qui si usa così:se ci sono i proprietari,si prepara e si fa colazione insieme, se escono o vanno a lavorare you help yourself! Nel senso che ti fai il caffé e ti scaldi il pane! Paese che vai...