In our experience you can get away with every 2-4 weeks depending on the weather and tenants. - Often, you can pay a tenant to do the cleaning.

It is a very block by block city depending on the neighborhood.  

Walls don't look bad at all overall but it depends on whether you have touch up paint that matches or not.

This depends.

Quote from @Bryce Nesbitt: Sure, but you can't depend as a MF owner on everyone setting their car timer to match the building needs. 

It all depends on your appetite for risk.

The company offers promissory notes worth $50k, $100k, and $200k+, with annual interest rates ranging between 12% and 16.7% depending on the investment amount.

Most hard money lenders are going to require 10 -20% down payment and then require you fund bring 10 - 20% of the rehab budget depending on your experience flipping (in your name/LLC you own), property ARV, etc.

For design, it really depends on your preference? 

Now if you want to buy and live there forever or you want a specific location or lifestyle or the amenities, might be something to consider, but not for investment....they're for living.Your best option right now depending on your income, is probably to buy at least 4bed house or 5 bedroom if you can make it work financially and rent bedrooms.