A quick example, a tenant threatened to sue for health issues relating to black mold (home has never had any water issues or reason to believe there is mold), because I denied their request for a new washer machine (old one works perfectly fine).

Has he not responded to that request?

Also I will definitely be requesting a lower price considering that the boiler is shot and the windows also need replacing.

Send a letter to PO box and in red ink  outside envelope mark " ATTN Post Master;  Forwarding Address Requested".

He twice sent texts telling me he would ‘respond’ to my request when he was free; however, as I previously mentioned, I told him that his response was not needed.

Never ever ever ever again. ever.When they want something from you, they demand immediate action (Ex: Calling at 10pm to tell me my tenants had put a small yard gnome in the flower bed outside their door, demanding its immediate removal.)But when i requested that the dry rotted outer door jambs be replaced (per by-laws stating they are responsible for "from the studs, out") It took nearly 6 months of emails, phone calls, threatening legal action, and finally petitioning to have the president of the HOA removed.

I've heard of folks requesting/requiring a lock box on a wholesale property; however, I personally would never ask that of a seller as i would never want the keys to my house hanging on the doorknob outside!  

Things will break while someone is there and a poor response to their request can reduce the amount of people wanting to rent there.

To apply it to your question, Appfolio tracks property and tenant information, while allowing tenants, vendors, and owners to create portals for online payments, maintenance requests and tracking, and document sharing.

I have the rent roll, and I am requesting the operating expenses :Property Taxes (I already got this from the county)Insurance (I am getting a quote)Matanance and repair LandscapingGarbage Power (If paid by owner)Water and sewer (If paid by owner)A copy of all leases of all occupied unitsYear the roof was replacedYear when last update took place The age of the AC unitsWhat am I missing?