I use those and have a generally positive view on them, but from personal experience, the adapters tend to de-synchronize, and re-synchronizing them is a pain (first of all because you need to actually access them, but since they are ugly they are generally kept hidden in hard to reach places).

They are also the other issues people reported.

IMO, they are fine in a rental where you don't have a lot of options and don't expect too much, but if you have a choice, use a better alternative.