When we did our first one, I was very concerned about the saleability, my agent assured me that at the price range ( 120k)  we would not have any problem selling it if we had a transferrable warrenty.

As I shared with you before, a friend of mine in that market had the same renters for 13 years in a 3/2 in that price point.The location of that property has no shortage of renters in that price point.My only concern, which I shared earlier, would be capex.

It's just my opinion but many comments here seem to be based on electric tankless and also many concerns are centered around older technology.

However, if you told them landscaping was their concern and they signed on the dotted line that they understood, then yes charge them.  

The other concern is that I don't agree to something I didn't expect to. 

I am concerned it is price.  

Also, your situation is likely difft than mine where you may not have a high mortgage to deal with and the rent numbers pencil better for you.If there are any negatives, not many, but 1 concern i had back then, and still do, is they just keep building and building and building more homes.  

Any glaring concerns?

We will be the only rental on the market in our area that has a private pool and for that reason I am concerned we may have a ton of interest from folks that may not qualify.

I stipulated that emergency calls would be answered right away only if they concerned electrical, gas, or water.