I very much enjoyed my week long stay at Simona's cozy flat. First of all, the location was perfect for what I wanted: nice, quiet neighborhood just a ten minute walk to/East of London Bridge and London Tower. Bus stop mere steps from the front door (both directions), less than 15 minutes to Tower Bridge Tube station (though I mostly walked everywhere). Great neighborhood pub (Town of Ramsgate-go see Michael, the tall Aussie dude) about a five minute walk East. Tesco Express (10 min walk West) and a Wait Rose full market (5 mins) easily accessible.
Full kitchen (I only used the fridge and toaster), nice little fenced in backyard patio, couch and TV downstairs (no TV in my room (which I didn't mind) but one in the other upstairs guest room), and a nice little "breakfast nook" off the kitchen if you want to eat in (I only used it once in a week. Ate on the patio one evening).
Adequate bathroom facilities, though the water pressure in the shower is pretty weak (I had no problems with it, but if I had long hair I could see it being an issue).
The first 4 days I had the place to myself, which was a nice bonus (Simona was out of town), but even with two other people there the last few days it was very comfortable.
Simona was very quick to reply when I had a couple minor issues/questions, sorted things out no problem. Sorry I did not get to meet her as she seemed super nice (and many reviews said she is).
All in all I found it to be an incredible location and a very good value for the money. If (when) I go back to London as a solo traveler I would happily stay there again.