Sorry - I should have given a review of my visit with her, but I can back up the OP's comments - she was very good indeed, really impressed.
I've found standards have dropped over the last couple of years, but she's definitely staying on my HL and I'll probably visit her again next time I'm in London - as I'm not there that often, I find it increasingly difficult to find a reliable good punt available at short notice, and as much as I'd like to sample lots of different options I think Dalia/Simona is definitely worth a return visit.