@Kevin1244:
I operate three homes; a 1 bedroom, a 2 bedroom and a 3 bedroom. Noted- they are all houses, not apartments, but perhaps some of my experience of the last four years will help you.
Occupancy:
1. The most rented home (91% annually) is the two bedroom with maximum 5 guests. We have found that single guests to full occupancy will rent this home. It is popular with friends or co-workers traveling together but not wanting to sleep together as well as families needing more than one bed.
2. The second most rented home is the three bedroom (85% annually). Usually it is rented by either people needing three bedrooms or who have a pet. Rarely do we rent the three bedroom for people needing only one or two bedrooms.
3. The one bedroom home rents the least at 81% annually. Understandably it is most commonly reserved by individuals and couples.
Income & Expenses:
1. The one and two bedroom homes rent for very close to the same dollar amount.
2. The 3 bedroom home rents for only about $25 more than the other homes.
3. Even with 6% lower occupancy rate the 3 bedroom home generated about 25% more gross income, but only about 12% more net income due to the higher expenses in cleaning, utilities, mortgage, and wear and tear.
Other Considerations:
1. The larger the home the more guests will be invited, thus the more potential for problems.
2. Apartments have closer neighbors who may not like the Airbnb guests and cause problems.
3. Apartments usually have pretty nasty sublease terms.
4. If I had my choice I would be starting a fourth home- a 2 bedroom one bath.
Like I said, perhaps this will help you.