I interviewed at Whisper when they were in a mansion in Santa Monica. It was an interesting setup that had all the amenities of home like a full kitchen, shower, pool, laundry. Those are all perks few offices have so you could differentiate your company if you had them.
(It sounds like you are happy! I just wanted to point out to you and others that these two particular perks do not necessarily require working from home)
Edit: same general idea goes for the folks down thread appreciating access to a full kitchen. In fact, if one were designing an office, would this thread not be a great place to get ideas to distinguish your new office in awesome ways?