Archive pages structure using a unique hierarchical taxonomy, could be good for SEO?

[danielecelsa]

Hi,

Preamble:
We are creating a website where people look for professionals for some home working.

We want to create a homepage with a search bar where people write the profession/category (actually it is a custom taxonomy) that they need, like ‘plumbers’, and a dropdown/checkbox filter where they can choose the city where they need the plumber.
The result page is a list of plumber agencies in the city chosen. Each agency is a Custom Post Type for us.

Furthermore, we are hardly working to make our SEO ranking as high as possible.
So, for example, we know that it is important to have a well-done Archive Page for each Taxonomy term, besides a well-done Results Page.
Also, we know it is bad for SEO to have duplicated pages or (maybe) similar pages, ranking for the same (or maybe also similar) keywords.

Proposed Structure:
So, what we are thinking is to have this structure:
A unique hierarchical taxonomy that INCLUDES the City AND the profession!

That means that our taxonomy ‘taxonomy_unique’ has terms like: ‘Rome’, ‘Paris’, ‘Dublin’ as father and also terms like ‘Plumbers’, ‘Gardeners’, ‘Electricians’ which are sons of some City father!

So we will have the term 'Plumbers' son of 'Rome' and we will have also the term 'Plumbers' son of 'Paris'. Each of these two taxonomy terms (Rome/Plumbers and Paris/Plumbers) will have an archive page that we want to make ranking for the keywords ‘Plumbers in Rome’ and ‘Plumbers in Paris’ respectively.

It is easier to think of it imagining the breadcrumbs. They will be:
Home > Rome > Plumbers
and
Home > Paris > Plumbers

Both will have:

• a static content (important for SEO), where we describe the plumber profession with a focus on the city, like ‘Find the best Plumbers in Rome’ vs ‘Find the best Plumbers in Paris'
• a 'dynamic' content - below - that is a list of Custom Post Types which have that taxonomy term associated.

Furthermore, also 'Rome' and 'Paris' are taxonomy terms that have their own archive page. In those pages, we are thinking to show the Custom Post Types (agencies) associated with that taxonomy term as a father OR maybe just a list of the 'sons' of that father, so links to those archive pages 'sons').
In both cases, there should be also a static content talking maybe about the city and the professionals it offers in general.

Questions:
So what we would like to understand is:

1. Is it bad from an SEO perspective to have 2 URLs that look like this:
   www.mysite.com/Rome/Plumbers
   and
   www.mysite.com/Naples/Plumbers
   where the static content is really similar and it is something like that:
   “Are you looking for the best plumbers in the city of Rome”
   and
   “Are you looking for the best plumbers in the city of Naples”?

Also, these kinds of pages will be much more than 2, one for each City.
We are doing that because we want the two different pages to rank high in two different cities, but we are not sure if Google likes that.

2. On the other hand, each City will have one page for each kind of job, so:
   www.mysite.com/Rome/Plumbers
   www.mysite.com/Rome/Gardeners
   www.mysite.com/Rome/Electricians
   So the same question, does Google like this or not?

3. About 'Rome' and 'Paris' archive pages, does Google prefer a list of Custom Post Types that have that father term associated as taxonomy, or a list of the archive pages 'sons', with links to those pages?

What do you think about this approach? 
Do you think this structure could be good from an SEO perspective, or maybe there could be something better alternatively?

Hoping everything is clear, we really appreciate anyone dedicating its time and leaving feedback.
Daniele