There is Markley, which is right in Boston(and has a companion facility in Lowell). https://www.markleygroup.com/
There is coresite, which is in somerville, a stone's throw from boston:  https://www.coresite.com/data-center/bo1-boston-ma
I think Digital realty trust may have a facility in needham.

I also agree with Mauricio, September (or autumn in general) is a good time to be in Boston/New England. 

rgt

On Fri, Sep 3, 2021 at 4:34 PM ic <lists@benappy.com> wrote:
Hi there,

I’m running a hosting company in Europe and I’m planning to go to the Boston area end of September to scout some datacenters for expansion into the USA. Which locations do you like/dislike? I’m also taking commercial contacts off list on my pro email (ml _at_ shrd.fr) if any here to arrange the visits.

BR, ML