I've rented Martin's car several times, as its incredibly convenient for me. But it's never less than spotlessly clean, full of petrol, and Martin is always very helpful and quick to respond to queries. Wouldn't hesitate to recommend.
Martin sent very clear communication via email beforehand. The car itself was exactly as described and very clean inside. It is an excellent vehicle - ran very smoothly on motorways and smaller roads, handled well and comfortable. Martin also prompt and clear with communication at end of trip - very professional and personable.