Had a great stay at Miquel's place. Miquel was very helpful and waited until late to welcome us.
Arta is a great base for a quiet location, but with plenty of restaurants and things to see within driving distance. The house is very traditional and probably nice and cool in the summer, though rather chilly in April. (Though Miquel provided some heaters that eventually warmed the house.) I would recommend the Cuevas de Arta, they were spectacular. It's also worth spending the morning strolling around the market when it comes to Arta on Tuesdays (and Saturdays).