Havenly offers simple interior design help for bathrooms and kitchens, while Modsy does not offer online bathroom and online kitchen interior design. COST: Online interior design services include a sprucing up service, the Havenly Mini, starting at $79 per room. For $199, the Havenly Full includes concept boards and product suggestion found in 7 Best Online Interior Design Services | Decorilla Please note: You are currently browsing img create a classic garden room conservatory decorating that is 550x550px in size. This image is listed in garden room interior decoration category. 7 Best Online Interior Design Services Decorilla, 550x550 in 56.83 KB.