The construction and kid noise began about a week before Marisa arrived. Upon Marisa's arrival she was told of the noise and offered a full refund or a free upgrade to a larger apartment with an ocean view on the top floor well away from any source of noise. She declined both offers.
I have since stayed in the studio over night in order to see how bad the noise and wifi connection could be. Wifi connection on my iphone is strong throughout the studio.
Noise during waking hours is present but muffled and I had no problem sleeping at night or taking an afternoon nap. As for "footsteps or running water" at 3AM that could be all upstairs - and I don't mean in the apartment above.
Yes, the noise from upstairs is a new and very annoying issue. I'm working on a solution however the upstairs noise is likely to continue for the next several months.
The construction at the house next door is scheduled to finish this month.
I installed a new wifi system that is dedicated to the studio, so at least that problem is fixed.