Udmas,
Does your beagle bark much?? I love beagles too, but the ones I had growing up were real big on "ahhhwoooo", like a bloodhound and they barked alot. Not a real good combination for an apartment building!!

You could make alot of enemies real fast, Biggins.
Also, dogs don't do so well when left home alone all day. At least, that's my experience. Cats don't care! ha. It sounds good on paper to have a dog to run with, but they don't really want to run. They just want to sniff and sniff and sniff! But, I guess you could train it to keep running. There is this cute little dog that doesn't bark. Looks like a poodle but cuter. Basenjis. I know they are expensive, but you wouldn't have to worry about the neighbors.
The Worst Breeds for Excessive Barking - Taken from The Perfect Puppy
The list under #10 are the worst barking offenders!!
#1 Rating: The least offensive barkers
Here at the top of the chart are listed
the breeds least likely to bark inappropriately.
As you move toward the bottom of the list, each
successive group is more likely to bark without
justification than was the group before. Bloodhood
Golden Retriever
Newfoundland
Akita
Rottweiler
Chesapeake Bay Retriever
#2 Rating Labrador Retriever
Austrlian Shepherd
Great Dane
Old English Sheepdog
Alaskan Malamute
#3 Rating Saint Bernard
Boxer
Doberman Pinscher
Vizsla
Collie
Bulldog
#4 Rating Chow Chow
Brittany Spaniel
Basset Hound
Norwegian Elkhound
Afghan Hound
#5 Rating German Shorthaired
Pointer
Standard Poodle
Bichon Frise
Keeshond
Siberian Husky
#6 Rating English Springer Spaniel
Dalmatian
Cocker Spaniel
German Shepherd
Shih Tzu
Samoyed
#7 Rating Scottish Terrier
Weimaraner
Dachshundi
Pug
Airedale Terrier
#8 Rating Irish Setter
Maltese
Pomeranian
Lhasa Apso
Shetland Sheepdog
Boston Terrier
#9 Rating Chihuahua
Silky Terrier
Pekinese
Miniature Poodle
Toy Poodle
#10 Rating - The most excessive barkers
Listed here at the bottom of the chart are
the breeds that are the most likely to bark
when they should not be barking. Yorkshire Terrier
Cairn Terrier
Miniature Schnauzer
West Highland White Terrier
Fox Terrier
Beagle
I personally think cats are less stressful and better suited for an apartment, but you'll never get them jogging with ya!!
Good luck. Cats offer lots and lots of affection and company. They sleep all day while you work, then come alive in the evening and follow you all over the place. Good company. Especially in a dogless house.