Do renters baulk at combo washer dryers?

[Randall Demary]

I'm in the process of buying a new construction with an JADU (attached In-Law suite) rental. The unit is a small, but quite nice, one-bedroom (or will be by the time I list it). The builder offers only very specific options/upgrades that don't include washer dryer hookups. Comps show that having W & D is a must. I could fairly easily add a ventless washer dryer combo (the all in one unit type) under the kitchenette counter. Here's my concern. My research says those 1) take 3.5 hours+ per load; 2) leave the clothes feeling damp and needing to be shaken out; 3) can only accommodate the equivalent of 2 large bath towels and two hand towels per load. My concern is that most Americans aren't used to doing laundry this way and may write the unit off much as if it didn't have a W & D. 

Anyone have experience with this? I technically could add a more traditional setup, but it would be expensive and an all-around pain.