Risk reduction is the primary goal in the prevailing business practices in our industry.

In fact, since I've started real estate investment, I negotiate more and more things and in increasingly creative ways.I've had people ask for sometimes large reductions in rent and I've just politely declined, but if I couldn't fill the property, I would reconsider. 

If a tenant asks for a lease modification because of a loss of job permanent/temp/reduction in hours/reduction in pay.

The reduction will be around 30% .

They fail to take into account opportunity cost of the money they used for the down payment, principal reduction, appreciation, capital improvements, etc.

(see Standard of Practice 3-3 and 3-4 for full quote) I think when agents state it's not negotiable, what they really mean is that many brokers won't allow a reduction, or if they do, it's taken from the agent's split, so it is unlikely they could agree. 

I know if it were my daughter, I would help her write a letter to the management and attach a copy of the clause in the contract that they are violating, state clearly you did not receive internet or any compensation to cover it, and then ask for what you want, either a reduction in rent or internet installed immediately or released from your lease so you can move without penalty, whatever.  

In this area, one month rent is about $3000.You can ask for any reduction you want, otherwise the house will be left a mess on each open house; clothes everywhere, leave the lounge a mess, bras hanging off door knobs, underpants drying in the shower, no washing up done for at least 3 days beforehand (so the sink brimming with dirty plates, cups, etc).

Even a reduction in rent by $25 is $300 or even $50 is $600 versus $3000. 

This will cause panic to be heightened. https://finance.yahoo.com/news/hell-coming-mathematical-proof-185019616.htmlSo I freaked out on Friday and asked for a massive price reduction or I will walk away.