i cannot speak to the other areas other than pdc, but if you are on foot and wanna be close to the beach, groceries, and restaurants in pdc, then staying in the heart of town would be the best option.
there are countless rentals sites. many offer monthly rentals.
if you see one listed on a popular rental site (air bnb for example), and it is run by a local management company, don't hesitate to bypass the rental site and contact management directly. we have done this a few times and it was def cheaper. but some people may not be comfortable doing this.
if you find a building in an area you like you can often contact them directly as well, as many condos have in-house rental programs.
my suggestion is to check google maps for grocery locations and start there. then look for accommodations (large studio or 1 bdrm unit) that fit your budget between there and the beach.
- there is a chedraui in the far south end by the hwy (you won't wanna be there)
- a walmart on 30th ave (lots of rentals close by)
- a mega on 30th ave and constituyentes (great area/lots of rentals and food close by/easy walk to beach)
- and the chedraui on 10th ave and 34th st (right by the sports park)
- there may be others
i can only tell you my experience staying in town. others may have had worse luck. lol but we found as long as we stayed off of 5th ave, chose a building that did not have a bar or late night place with music close by, and got a unit that faces an internal courtyard instead of facing the street, we had no noise issues.
but obviously if you have a room that your balcony opens on to 5th ave, 10 ave, 30th ave, constituyentes etc, then it could be noisy. just like any other busy city.
just for example.....we stayed at palmares condo last year, which is across from the mega. we had a one bdrm unit with a balcony that opened to the internal courtyard pool. never heard anything. it also had a private rooftop with a jacuzzi.
we have also stayed between 5th ave and the beach around 32nd st and cozumel ave and never had one issue with noise. and that one had two balconies that opened onto the street.
cocoa beach is also a really nice area that is very quiet and very close to the beach. lots of restaurants close by but i am not aware of a grocery store right near there.