That is assuming that your other tenant do mind the noise :)It really depends on what you want to do with it though.

I WILL succeed in this deal and ANY newbie can too so long as they understand the sacrifices, hard/grinding work, and time that will be needed to be successful.

They were hearing gurgling noises at first, then it starting backing up into the kitchen sink (when they were not using the sink).

Not a surprise that it closed down but the road noise from Hampden must be quite noticeable. 

Don’t let the noise of other opinions drown your own inner voice.

I have grown my rentals and made money here and there but it has been a grind.

What I find is commercial clients with various levels of wealth view things differently.Someone with 400k is at a different place than someone with 40 million.If you live comfortably off of 100k a year and are sitting on millions you do not want risk you want safety.So if you can buy a property 25% down that throws off 15% coc on your money annually then you do not care about riskier type properties where you get 3,4,5 percent more etc.You have already made it and now want to protect your wealth.There are others ways to increase wealth than grinding out a value add.

Maybe if I could find an underlayment to cut down on the noise, I would consider it.

Its not about money, its about the grind and making the deal.  

I have not looked at all the podcasts, nor have I read all the blogs, or the books offered, but what I can tell you is that not a single presentation went by that did not make my BS Meter at least flutter, some caused strange noises and a few blew up my Meter!