Well Guinea pigs do need space to run around so don't get a hutch that has no room for them to do that, and don't have a crowded hutch either. Here are some Hutches that I recommend:
Outdoor Cages/Hutches
This is a two floored hutch that is recommended for 2-4 Guinea pigs this is also the Hutch that i have for my two Guinea pigs (Gin & Pap).

This hutch is a one floored hutch and is recommended for 1-2 Guinea pigs.
Indoor Cages/Hutches
This cage is one floored and is recommended for 1-3 Guinea pigs.

This Hutch is a High up one floored Hutch and is recommended for 1-2 Guinea pigs.