The Wi-Fi internet was VERY problematic the point of being unusable most of the time. I contacted the host about the problem, made it clear that this was a big problem for me, and the most I ever heard back on this issue was that they would contact the internet provider. When I followed up the next day letting them know that the internet still wasn't working properly, there was no reply.
I understand that such issues can sometimes be beyond the host's control, but in such cases I expect the host to at least try to do something to make things right -- not just ignore the problem.