Honestly, this was the second time I rented a room instead of the whole place.
Having in mind the difference, it is absolutely worth it to have the whole place.
Basically we had the room only, some relatives were visiting them, so it was always noisy, the toilet (the same the relative were using) was always occupied and left dirty having no constraints with the fact that we were there using it as well.
No A/C. Plus he made us pay the usage of the towels, which is a bit unusual and not the point when obviously someone that chooses a room has in mind saving money, not paying for using towels (which hotels and airbnb's usually don't charge).
Everything else was good, he is a nice guy, he waited for our late check-in, very good answering our questions before going, etc.