It may seem at first as though Vessel faucets were an easy thing to classify into a grouping of plumbing terms, but there are many choices when making any decision that requires you to understand that faucets are a necessity for any bathroom or kitchen.
Taking the time to really get to know what the topic is that you are dealing with is detrimental in choosing the best faucet for your particular setting, and is essential for getting any work done in a satisfactory way that allows for use for many years.
As this topic is not a limited category to approach, it is best to tread lightly where you know not to go, and to give a professional full leeway when dealing with them for their advice or hiring them to work for you. It is better to be able to make an educated decision about your faucet choices, and any professional plumber or salesperson that doesn't show you courtesy will need to be approached in a different way as opposed to full confidence in their abilities because of a lack of respect.
On that note, it is very disrespectable for even an apt and skilled professional to treat their customers with some kind of disdain, and it would be better advised to find another professional plumber if there is certain tension that is unbearable for you. There is no valid reason why a career plumber could conceivably act like that towards a potential client, but much like any other person, professionals have a different demeanor all to themselves and that can make them intolerant to work with.
However, professional help need not be as all-encompassing as it would seem, but instead limited to advice that could be confusing for those unfamiliar with the approximate idea of how to get at it.
Though you can also find helpful advice over the Internet as well, and that can be a better option to go through these means as well to get a better deal for yourself overall, making it far simpler to install the faucet above all. It can be perplexing, but doesn't need to drag for the whole length.
A vessel faucet is commonly referred to as above counter sinks, making a statement as far as what you would like to see, but requires a special type of faucet to clear the sink. Some designs of sink will come with integrated holes to allow for ease of faucet mounting, and these particular faucets come as either a single spout with a single lever controlling temperature and volume of water, or a style in which there is a single spout and two handles to serve hot and cold variations of water.
Other vessel faucets, without pre-calculated holes in the sink, will require tall counter installed faucets. If any other troubles seem to be getting advantage of you then maybe it would be best to look into finding a different type of faucet to include in your plans, get any professional advice on what options to take as far as understanding what faucets could best serve the task of summoning water to where you need it, and always be sure to get research done far enough before starting.