I saw Yaya in Southampton recently and my experience was neutral overall too. I haven't reviewed because, well, if I reviewed every girl I see I'd never get anything done. She was pretty and very friendly and upbeat. I had booked with her as second choice because Oriental Emmy wasn't available at the time I wanted. Yaya and Emmy were working out of the same flat.
Anyway, two things about Yaya - first, touching or kissing her pretty much anywhere was a problem because she's off the scale ticklish - I believe genuinely, not as a ploy. Second, she's very small, and this was particularly noticeable in doggy, her arse is tiny - not bony skinny, just very small, to the extent that I found it quite off-putting because she looked like a child and it made me feel like a bit of a paedo. Luckily she has a beautifully done rose tattoo on her lower back to dispel that impression.