I already had some experience with this service and it 100% suits me. I even find the app better than the website. Every time when I travel somewhere I look at this app and find options which suit me. And always find one!
They also have very nice support team. I made a non-refundable reservation but wasn't able to do the trip. I called zenhotels and asked if it's possible do get a refund, support specialist told that she'll do the best and they've managed to do this!