The best thing about host labs is that they have multiple data centers in different locations around the world which makes it easy when you need to switch servers at any time without worrying much.
I haven't found anything bad from them as of now. They offer great customer service with fast response times so if there's ever something wrong just contact their live chat or ticketing system and get things sorted out quickly. It has been great working with them because they make sure everything runs smoothly before switching over to another server.