The best blog for travellers would be the one that would address specific details that you may be after. Every traveller would be different as there are different destinations which will have different sets of blogs speaking about them. There is no single solution that is good for just about every traveller out there.
Things like what can be done at your destination throughout the year together with how much it would cost you to enjoy your trip overall depend upon which destination as well as what season you may be traveling in. It would therefore be necessary for you to go through all available blogs for travellers in the hope of finding the best one that would meet your requirements effectively.
Travelling alone to a destination for personal ambitions would be different from travelling in a group all with a common interest. You will only be able to identify the best blog for travelers by researching online and looking for those that have information that you are in desperate need for. If the destination that you are looking to travel to is quite common and popular then it would be a lot easier for you to find information about it online from a number of different websites.
On the other hand, if your destination is not as popular then you will be struggling a little bit. However it is never impossible to find information about just about any destination in the world subject to the fact that you have access to the right blog for travellers that can provide you with information that you require.