You'll also have to clean it and get rid of trash, maintain the fridge and sink, etc., etc.Same with offering a service that you have to maintain like wi-fi and Netflix and Hulu. 

The faucet - well, if having a hose helps her feel more efficient in her kitchen, or maybe she wants to wash her hair in the sink after coloring it, I guess that's not horrible either. 

You could do a subway tile pattern with medium size tiles--very economical and easy to install.I'm not sure what the pseudo window above the sink is about.

@Wei HuangYour market will dictate whether you turn the split into an up-down duplex or keep it as an SFR.Here, we have student house where we have a kitchenette in the basement which has everything but a range and dishwasher (i.e. sink, fridge, microwave).  

At least the toilets and sinks in the bathrooms were there.

When we opened under the kitchen sink to inspect the disposal, we found a litter box of dog poop over filling the box and white fuzzy mold growing on it!!!

Yes, that's a small sink.

He was supposed to return Sunday morning to do that but he told her how to turn the water back on at the shut off valve under the sink. 

Hopefully not down the kitchen sink?

I think we're going to do new doors, re-spray the interior of the cabinets and throw a new sink in and granite countertop.