Looking for transportation for a trip to Europe: renting a minibus

My colleagues and I are planning a trip to Europe and we are thinking of renting a minibus with a driver. It is important that the transportation is comfortable, as we are going to spend a lot of time on the road. Are there any companies that you could recommend for minibus rental? It is important to have a spacious cabin, wifi and an experienced driver who knows how to take the best routes. I would be grateful for advice from those who have already experienced organizing such trips and know reliable companies.