Fabulous apartment. Spacious, comfortable, warm (in December, so that's important), well-equipped (kitchen has everything you could need for cooking), great communication and support from Jan (thanks!). Also Bubeneč is a great area:
you're a short walk from multiple major tram lines and a metro station (also useful for the airport, was about 20 mins by Bolt) and you can walk to the Castle in half an hour. But also fantastic cafes and restaurants (Místo, lots of great Vietnamese places, Zasekávák), great pubs/microbreweries including Pivovar Bubeneč right on the corner and Automat Matuška further down. Great wine bar too round the corner. Also good bio deli and nearby supermarket/grocers, and near to Stromovka park (if you're a runner this is really good in particular - my husband saw a beaver swimming in the river there while out for a run). It would be a great place to be based either for a weekend trip to Prague for sightseeing or for a longer work or study trip. Strongly recommend