Yes it’s very good.
It is, in essence all the Sky Premium content for less than buying the same via Sat.
It’s streamed over the net, so you need to connect to that – it’s technically needs about 4Mbps to run properly in HD – so bear that in mind, especially if you have kids with tablets / gaming stuff etc.
You can watch stuff as it broadcasts live, or after the event without ads, which is lovely. Sometimes the moment it ends, or sometimes the next day.
The only slight downside is it’s limited to a number of devices and they limit how many devices you can on board/off board a month, and if your device takes a shit and needs to be factory reset it will think it’s a new device, only happened to me once and they sorted it for me via livechat.