I'd like latency as well as speed. A lot of hotels I have been to have really high ping times.
Yes, latency is very important. We found that there is a strong negative correlation between bandwidth and latency (faster connections tend to have lower response times). That's why we decided to focus on speed first. We are planning to add ping testing as well.
I'm sure you guys are on it, but: See apenwarr's 'Blip' for checking latency in the browser: https://github.com/apenwarr/blip