Well, subject says it all. Although MSDN has plenty of info what classes are accessible in a sandboxed solution I just couldn't find the info if I can read or write to SPWeb.AllProperties.

Basically I want to create a sandboxed WebPart which is able to read/write a particular setting to the SPWeb property bag.

Would be great if someone could give me a quick pointer as I currently don't have a development VM at my disposal. Thanks!