Handmade glass is handmade glass where ever it is from. Bubbles and small marks are very difficult to avoid, especially when lots of colour and techniques have been used, and are not necessarily an indicator of origin. Murano glass can range from extremely good quality down to downright dodgy, so can Chinese glass.
I would say your vase is Chinese. The base is finely ground but not polished (shiny), the pattern seems to be trying to be about dozen different things at once and it has what looks like oversized stretched millefiore. It seems to me that Chinese glass is often brasher, more patterned, less careful, slightly off proportion wise, imitative rather than original and larger so that something seems adrift when you look at. For me, your vase ticks most of those boxes.