I have been using Bill LaPete's darkroom rental for a couple of years now. He has the lowest prices and the best equipment. Only $40.00 for a 12 hour day. Weekends are a little more. You can print any format up to 8x10 ( he has an amazing Durst 8x10 enlarger) and a film room with a Jobo. He is always available to help out too, so it's a great place for an expert as well as a beginner. He's located on Congress St. near the T, there is also plenty of parking in the area at $11.00 a day. His phone number is 617-338-3836.