I went to Cameo Cakery for the first time this past week and I really liked it. It's the first moist cupcake that the husband has eaten in RVA aside from Ukrop's which he thinks is too sweet. But this is relevant to your question because I also tried an espresso martini from there and I enjoyed it. To be honest, I'm not sure I've ever had an espresso martini before, (only a chocolate martini) so I don't have a discriminating palate. I think you should give them a shot though.